You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jessica Jackson.

ASSISTANT: How may I guide you?

USER: I would like to reach San Francisco to buy some gadgets in whole sale market, can you please assist me in flight ticket booking on 04/18 and book the return ticket also on 04/20?

ASSISTANT: Sure, I will help you. may I know your source and destination airport codes please?

USER: Thank you and I would like to start my journey from PHX location and I have to land on SFO location.

ASSISTANT: Please hold on a moment, I will find the availability of flights. Thank you for your waiting, I found an economy class ticket in Southwest airlines with fare 200. Can I book your ticket?

USER: Yes, please proceed with flight ticket booking.

ASSISTANT: Ok, your booking is confirmed with flight number 1015.

USER: Thank you for your quick help in my flight ticket booking.

ASSISTANT: Thank you for approaching us.