You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Nicholas Martinez.

ASSISTANT: Nicholas, how may I help you today?

USER: Actually, I booked a ticket to attend an event in NYC but due to some problems, I would like to cancel my trip.

ASSISTANT: Let me check your previous reservation details in our database.

USER: Sure, take your time.

ASSISTANT: Hello, no reservation found by your name.

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

ASSISTANT: Thank you for contacting us.