You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Due to an emergency, I want to change my existing reservation. Can you help me?

ASSISTANT: Sure, please wait a moment. May I know your good name please?

USER: I am Paul Walker.

ASSISTANT: Thank you Paul Walker, there is no reservation on your name.

USER: No issue. Thank you for quick reply.

ASSISTANT: Thanks for choosing us.