You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Due to some problems my trip was cancelled so can you please cancel my flight ticket?

ASSISTANT: Sure, I can help you with the ticket cancellation. Can you please tell me your name?

USER: Thank you for your response, my name is Steven Hill.

ASSISTANT: Ok, please give me a minute.

USER: Ok.

ASSISTANT: I regret to inform you that, there is no ticket booking found with your name to cancel.

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

ASSISTANT: You are welcome. Thank you for reaching us.