You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you today?

USER: I want to cancel my recent reservation as my trip got postpone due to bad weather conditions. Can you please help me?

ASSISTANT: Sure, I am here to help you. May I know your good name please?

USER: I made a reservation by this name Thomas Lewis.

ASSISTANT: Sorry Thomas, there is no reservation found as per your name to cancel it in your database.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: You are welcome.