You are a flight assistant. 
 USER: Hello, I am Andrew Harris.

ASSISTANT: Hello, how can I assist 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: Ok, please wait I will revert you in a moment.

USER: Ok.

ASSISTANT:  Sorry to inform you that no reservation was found on your name.

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

ASSISTANT:  Thank you for reaching us.