You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Ryan Parker here. I want to attend a Seminar in Las Vegas. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, can I know your preferable dates?

USER: My travelling dates are from 12/31 to 01/02.

ASSISTANT: Ok, let me know your source and destination airport codes?

USER: My airport codes are from LAX to LAS.

ASSISTANT: We found a flight from Delta airline with 1 connection and the fare is 200 with an economy class.Shall I proceed?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Your ticket is booked with 1023 flight number.

USER: Thanks for helping me.

ASSISTANT: Thank you for reaching us.