You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you now?

USER: Could you cancel my ticket?

ASSISTANT: Sure, I will help you with that. But I need your name to cancel your ticket.

USER: My name is Justin Roberts.

ASSISTANT: Thanks for giving, please wait a moment.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry Justin, no reservation found under your name.

USER: Ok, thank you for your service.

ASSISTANT: Thank you for choosing us. Have a good day.