You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you today?

USER: Margaret Clark here. Please cancel my recent reservation which I have done 2 months back.

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait for a minute. I am sorry to say that there is no reservation found.

USER: It's ok, not an issue. Thanks for checking.

ASSISTANT: Thank you for reaching us, have a great day.