You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to cancel my previous reservation, can you help me with that?

ASSISTANT: Sure, I will help you with the flight reservation cancellation.

USER: Thank you.

ASSISTANT: Can you tell me your name please?

USER: Sure, my name is Brian Hernandez.

ASSISTANT: I have searched online but I could not find your flight reservation to cancel it.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: Thanks for contacting us.