You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: My name is James Lewis. Due to an emergency, my trip is cancelled. Could you help me in cancelling the reservation?

ASSISTANT: Sure James, please wait a moment.

USER: Ok.

ASSISTANT: I have cancelled your reservation.

USER: Thank you for helping me out.

ASSISTANT: Thank you for reaching us, have a great day.