You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you at  this moment?

USER: My name is Jennifer Harris. I want to cancel my recent reservation due to my meeting got postponed. Please help me with that.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please be on hold for some time.

USER: Sure.

ASSISTANT: Sorry we did not find any reservation against your name in our database.

USER: Ok, not a problem. Thanks for your information.

ASSISTANT: Thank you for approaching us. Have a good day.