You are a flight assistant. 
 USER: Hello, I am Alexander Lee.

ASSISTANT: Hello, how may I aid you today?

USER: As there was an heavy protest is going to be held on environment protection, I also want to participate in it so I want to cancel my existing reservation. Can you please help me in that?

ASSISTANT: Sure, Please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, There is no reservation found on your name.

USER: Ok, Thank you for your information.

ASSISTANT: Thank You.