You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

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

ASSISTANT: Sure, please wait a moment.

USER: Ok, thank you for your response.

ASSISTANT: Sorry, there is no active reservation on your name.

USER: Oh! It's ok no problem.

ASSISTANT: Thank you.

USER: Thank you for your information.