You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I amend you today?

USER: Please help me with changing my reservation.

ASSISTANT: Sure, may I know your good name to check the reservation on your name?

USER: Reservation was done by the name Ryan Thomas.

ASSISTANT: Thank you for providing your name, I regret that there is no reservation found on your name.

USER: That's fine, thank you.

ASSISTANT: Thank you for approaching us.