You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I support you?

USER: Please help me to change my recent reservation.

ASSISTANT: Sure, I am happy to help you.

USER: I am Patrick Robinson.

ASSISTANT: Can I have your good name?

USER: Patrick Robinson.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no active reservation on your name in our data.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for choosing us.