You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Michelle Robinson.

ASSISTANT: How may I help you?

USER: I am unable to travel to my place due to my health condition, can you please cancel my recent reservation?

ASSISTANT: Sure. Please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for your time. Sorry to say that I could not find your flight reservation to cancel it.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.