You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Unfortunately, I would like to cancel my reservation due to some health issues, can you please help me in this intent?

ASSISTANT: Ok, please let me know your name so that I can help you easily.

USER: Sure, my name is Jeffrey Johnson.

ASSISTANT: Thanks for giving your name, there is no reservation found with your name.

USER: Ok, no problem I have might been done some mistake it seems while reservation.

ASSISTANT: Ok, thanks for choosing us.

USER: Thank you for your kind information.