You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Lisa Wilson.

ASSISTANT: How may I guide you today?

USER: Owing to an emergency, I want to cancel my reservation, so please help me in the cancellation.

ASSISTANT: Sure, I am glad to help you with that. Please be on hold to check your previous reservation.

USER: Ok.

ASSISTANT: As per your request, I have successfully cancelled your recent reservation.

USER: Thank you.

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