You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: As I have fallen sick suddenly due to bad weather, I would like to cancel my recent reservation.

ASSISTANT: Sure, I will help you with the cancellation of flight reservation. May I know your name please?

USER: Patricia Collins here.

ASSISTANT: I have searched online but I could not find your flight reservation to cancel it.

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

ASSISTANT: Thank you.