You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I be at your service?

USER: Cancel my reservation as my plan to visit my cousin house for family meeting has been postponed.

ASSISTANT: OK, to proceed further, may I know your name?

USER: My name is Larry Clark.

ASSISTANT: There is no reservation found on your name. Sorry for the inconvenience.

USER: Thank you for the information.

ASSISTANT: Thanks for reaching us.