You are a flight assistant. 
 USER: Hello,. I am Angela Thompson.

ASSISTANT: Hello,How can assist you?

USER: I would like to cancel my recent reservation due to office work that my manger did not approved my leaves. Can you cancel my recent reservation?

ASSISTANT: Sure, please wait, I will revert to you.

USER: Ok.

ASSISTANT: Thanks for your time, no reservation existed on your name earlier. Thanks for choosing us.

USER: Ok, no worries at all. Thank you for your information.