You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Thomas Mitchell. Due to some emergency work, Can you please cancel my recent reservation?

ASSISTANT: Sure, I am happy to help you. Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your given name.

USER: Ok.

ASSISTANT: Thanks for choosing us.

USER: No problem. Thank you.