You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you?

USER: I need to cancel my recent reservation, as I am suddenly fallen ill due to bad weather. Please help me in cancelling?

ASSISTANT: Sure, may I Know your name to check the details?

USER: Sure, I made the reservation on the name of Samantha Carter.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Samantha Carter, we have gone through our reservation list but could not find any existing reservation on your name to do cancellation.

USER: Ok, no issues. Thank you for your service.

ASSISTANT: Thank you for reaching us.