You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Recently I had a reservation with the name of Rachel Phillips, to attend for horse racing festival. I cannot attend there due to some health issues. Can you please cancel my reservation?

ASSISTANT: Sure. Please wait for a while. May I know your name?

USER: Ok. As I have already mentioned above.

ASSISTANT: Sorry to tell that there is no reservation on your name.

USER: Ok, not an issue.

ASSISTANT: Thank you for approaching us.

USER: Thanks for your quick response.