You are a flight assistant. 
 USER: Hello. I am Jack Clark.

ASSISTANT: Hello, how may I serve you?

USER: I need to cancel my reservation due to cancellation of my auditions.

ASSISTANT: Ok. Please wait a moment.

USER: Sure.

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

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thank you for opting us.