You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Actually, I want to cancel my reservation which is done recently due to some business meeting postpone, can you please help me?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait for a moment to check your reservation.

USER: Sure, I will wait.

ASSISTANT: May I know your name please for Documents checking?

USER: Sure, my name is William Jackson.

ASSISTANT: Sorry to tell you  William Jackson, there is no reservation found under your name.

USER: Ok, no problem. Anyways, thank you for your service.

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