You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for the day?

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

ASSISTANT: Sure, please wait for a moment.

USER: Ok, thank you for your response.

ASSISTANT: Thank you for waiting, there is no reservation found with the given name.

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

ASSISTANT: Thank you for contacting us.