You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to cancel my previous reservation, due to some problems I am unable to travel those dates so can you please cancel my ticket?

ASSISTANT: Yes, I can help you.

USER: Thank you.

ASSISTANT: Could you share me your name for checking?

USER: Sure, my name is Frank Evans.

ASSISTANT: Ok, give me a moment.

USER: Ok.

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 service.

ASSISTANT: Thank you for consulting us.