You are a flight assistant. 
 USER: Hello, Cynthia Clark is my name.

ASSISTANT: Hello, how may I serve you?

USER: Owing to an emergency I had to request for this cancel reservation.

ASSISTANT: Okay, please wait.

USER: Sure.

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

USER: Ok, Thank you for your service.

ASSISTANT: Welcome. Thank you.