You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

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

ASSISTANT: Yes, I can help you.

USER: Thank you for your positive response.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

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

ASSISTANT: Thank you for contacting us.