You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Larry Hernandez. Due to some problems my trip was cancelled so can you please cancel my flight ticket?

ASSISTANT: Sure,.

USER: Ok, thank you for your positive response.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Larry Hernandez, we don't have any reservation on your name.

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

ASSISTANT: Thank you.