英文高手入黎!

Hello, with referring to your interesting question, I have some answers,

- We wish to point out that all contract amendments should require the agreement of both parties.
- Ms. Burns, we have made the changes you asked for.
- If there are nothing to change, let's go ahead and sign the contract.
- I'm glad that we've agreed on the terms after repeated negotiations, and I hope that it will lead us to further business coorperations.

- Our next job is to see if this contract could be carried out smoothly.
- "I hope so" = "I wish"
- I hope everything will be satisfactory at the end.

P.S. I hope this might help ya ~! ( the above were my personal opinions )