You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, May I know your name?

USER: I am Richard Hernandez. Owing to an emergency, I want to cancel my recent reservation. Will you help me in cancelling reservation?

ASSISTANT: Sure, Please wait.

USER: Ok.

ASSISTANT: Thanks for waiting, no reservation found with your name.

USER: Thank you, for your service.

ASSISTANT: Thanks for choosing us.