You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to cancel my reservation, due to an emergency.

ASSISTANT: Ok. May I know your name?

USER: My name is Susan Campbell.

ASSISTANT: Sorry Susan, no reservation found with your name to cancel the reservation.

USER: That's ok. Thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: Welcome.