You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you?

USER: Please cancel my reservation which is already reserved before. As I am suddenly fallen sick due to bad weather.

ASSISTANT: Sure, may I know your name?

USER: Mary Miller, is my name.

ASSISTANT: Please wait for while.

USER: Sure, I will wait.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, no problem. May be I reserved with some other airline.

ASSISTANT: Thank you for reaching us.

USER: Thank you for the quick response without delay.