any errors in this paragraph

[robin lee]

Are these sentences correct?

Further to our telephone call yesterday, the telephone conference between you and our manager is booked for next Thursday at 10 a.m. (20 minutes). But our manager would like to conduct a telephone call of about one hour. You mentioned that you have another appointment that morning. In this case, we will need to book a new date for this telephone call. Please call me as soon as you can.

 

[teechar]

Are these sentences correct?
Further to our telephone [STRIKE]call[/STRIKE] conversation yesterday, the telephone conference between you and our manager [STRIKE]is[/STRIKE] has been booked for next Thursday at 10 a.m. (20 minutes). [STRIKE]But[/STRIKE] However, since our manager would like [STRIKE]to conduct a telephone[/STRIKE] this call [STRIKE]of[/STRIKE] to be for about one hour, and as you mentioned that you have another appointment that morning, [STRIKE]In this case,[/STRIKE] we will need to book a new date and time for this telephone call. Please call me as soon as you can to make suitable arrangements.

.