You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Samuel Walker. Actually, I booked a ticket to NYC to attend a concert but due to bad weather, I want to cancel my trip. Could you help me out?

ASSISTANT: Sure. Please give me a moment to check our database.

USER: Ok.

ASSISTANT: Sorry Samuel, there is no reservation found as per our database.

USER: That's ok. Thank you for your time.

ASSISTANT: Thank you for choosing us, have a good day.