You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Thomas Lee. I want to cancel my reservation as my interview got canceled, help me in cancelling my reservation.

ASSISTANT: Sure, please give me a moment to check your details and let you know the status.

USER: Sure.

ASSISTANT: Sorry to say that there is no reservation exist on your name to cancel.

USER: No problem, thank you for your assistance.

ASSISTANT: Thank you for reaching us.