You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am  Christopher Walker and I want to book a flight ticket  to participate badminton tournament in Houston,TX-HOU on 11/19.

ASSISTANT: OK, may I know your return date and origin point?

USER: Sure, my origin is from  Los angeles,CA-LAX and my return date will be on 11/21.

ASSISTANT: OK, please a minute. Let me check and revert you.

USER: OK.

ASSISTANT: Thanks for your time. There is a Delta airline with flight number 1006 and price of 100 matching with your request. Can I proceed with this booking?

USER: You can proceed with this airline.

ASSISTANT: OK, your ticket has been confirmed.

USER: Thank  you for your service.

ASSISTANT: Thank you for choosing us.