You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you help me out?

ASSISTANT: Sure, I am here to help you. May I know your name to check the reservation status?

USER: I am Stephen Campbell.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: There is no reservation found on your name in our reservation database.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for opting us.