You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: George Harris here. I need you to cancel my flight ticket. Please help me.

ASSISTANT: Sure George Harris, I am here to help you for this. Let me check your reservation status in our database.

USER: Thank you. Please take your time.

ASSISTANT: Sorry for inconvenience, no reservation is found with your criteria.

USER: That's ok. Thank you.

ASSISTANT: Thank you very much for contacting our agency.