You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Timothy King here.

ASSISTANT: How may I help you?

USER: Can you cancel my flight ticket reservation? As I have postponed my business trip.

ASSISTANT: Sure, please wait for a moment to check your details.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your name.

USER: Ok, that's not a problem.

ASSISTANT: Thank you for choosing us, have a nice day.

USER: Thank you.