You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: This is Frank Martin.

ASSISTANT: How may I help you?

USER: Can you please cancel my recent reservation flight ticket?

ASSISTANT: Sure, please wait a moment meanwhile I'll check the details of reservation on your name.

USER: OK.

ASSISTANT: Sorry, no reservation found under your name.

USER: Thank you for immediate response.