You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I would like to change my reservation due to heavy sunny at my destination place, so aid me in changing.

ASSISTANT: Sure, I will help you to change your reservation. May I know your name please?

USER: Sure, my name is Christopher Taylor.

ASSISTANT: Please wait for a moment, I will check the reservation list and revert to you.

USER: Sure.

ASSISTANT: Thanks for waiting, no reservation was found on your name.

USER: No problem, thanks for your support.

ASSISTANT: Thank you for choosing us.