You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I am planning to visit Fun Fair exhibition in Phoenix, but due to some health issues I am not able to visit exhibition. So I would like to cancel my recent reservation. Would it be possible to cancel my recent reservation?

ASSISTANT: Sure, we are pleased to help you.

USER: Thank you.

ASSISTANT: Could you please share your good name?

USER: Sandra Wright here.

ASSISTANT: Please hold on, while I will check in the previous list and revert  to you.

USER: Sure, I will wait.

ASSISTANT: Thanks for your valuable time. We hardly tired to find your reservation, but could not find any reservation on your name.

USER: That's fine, maybe it has been cancelled by my manager.

ASSISTANT: Thank you for approaching us, hope to serve you again.

USER: Thank you for your kind information.

ASSISTANT: Have a nice day.