You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I serve you?

USER: I want to cancel my reservation,will you help me?

ASSISTANT: Sure, may I know your name please?

USER: My name is Gary Mitchell.

ASSISTANT: Please wait for a minute. Thanks for waiting, there is no reservation found on your name.

USER: OK,not an issue. Thank you.

ASSISTANT: Thank you.