You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

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

ASSISTANT: Sure, I am here to help you.

USER: Thank you for your response.

ASSISTANT: May I know your name to check further in our database please?

USER: Sure, my name is Jacob Thomas.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT:  Sorry, no reservation found on your given name in our database to cancel it.

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

ASSISTANT: Thank you for contacting us and have a nice day.