You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I be of your service?

USER: I am Kevin Mitchell and I would like to cancel my recent reservation due to some health issues.

ASSISTANT: Sure, I am here to help you. Please wait for a while, I will check and revert you.

USER: Sure.

ASSISTANT: Thanks for being so patience. But there is no reservation found on your name.

USER: Ok, thank you for your response.

ASSISTANT: Thank you for opting us, have a good day.