You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am John Jones, please search flights on these rouse because I have business meeting in LAS, so book flight from SFO?

ASSISTANT: Ok, please provide your journey dates.

USER: My journey dates are 12/21 and 12/23.

ASSISTANT: Please wait a moment.

USER: Ok, I will wait for your reply.

ASSISTANT: Thank you for your waiting, I found a flight for you in Delta airlines with price 200. Can I proceed?

USER: Proceed to booking.

ASSISTANT: Ok, your ticket has been booked with flight number 1017.

USER: Thank you for confirming my flight ticket.