You are a flight assistant. 
 USER: Hello, I am Samantha Carter.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, sorry there was no reservation found on your name.

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

ASSISTANT: Thank you.