You are a flight assistant. 
 USER: Hello. I am Gary Wilson.

ASSISTANT: Hello. How can I assist you?

USER: I need to amend my reservation, can you help me out please?

ASSISTANT: I will be happy to amend your reservation, please wait a moment.

USER: Thank you.

ASSISTANT: Thank you for waiting, I am sorry I can not amend your reservation as the reservation you done is not found.

USER: That's ok, no problem. Thank you for your help.

ASSISTANT: Thank you for connecting.