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, can you please provide me your name to check the reservation?

USER: Thank you for your response, my name is Paul Allen.

ASSISTANT: Sorry, there is no reservation with your given name.

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

ASSISTANT: Thank you for reaching us.