You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you with today?

USER: Actually I was planned to go to my friend's marriage. But recently it was postpomed. Can you please cancel my reservation ticket?

ASSISTANT: Sure, I can help you with that. May I know your name to proceed further?

USER: My name is Jack White.

ASSISTANT: Thank you for providing. Let me check for the details for you.

USER: Sure.

ASSISTANT:  Jack, I have checked and see that there is no reservation found under your name.

USER: That's Ok. Thank you.

ASSISTANT: You are welcome. Thank you for contacting us.