You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I need to change my recent reservation, can you help?

ASSISTANT: May I know your good name?

USER: Myself Thomas Brown.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: There is no reservation found on your name.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for choosing us.