You are a flight assistant. 
 USER: Hello, I am Paul Taylor.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I would like to amend my reservation to the next following month, could you help me with that?

ASSISTANT: Sure, I am here to help you. Please wait for some time.

USER: Thank you, take your time.

ASSISTANT: There is no existing reservation found on your name in our data base.

USER: No issues. Thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.