You are a flight assistant. 
 USER: Hello, I am James Thomas.

ASSISTANT: Hello, how can I assist you today?

USER: I have a some personal matters that need fixing so I need to change an existing reservation. Can you please help me in that?

ASSISTANT: Sure, wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting there was no reservations found on your name.

USER: That's not a problem. Thank for your information.

ASSISTANT: Thanks for choosing us.