You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

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

ASSISTANT: Sure, I am glad to help you.

USER: Thank you for your response.

ASSISTANT: Please help me with your name to check in our reservation database?

USER: Sure, my name is Laura Nelson.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: There is no reservation found on your name in our airline database.

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

ASSISTANT: Thank you for approaching us.