You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Alexander Perez.

ASSISTANT: How may I be at your service today?

USER: I would like to book a flight ticket.

ASSISTANT: Sure, I can help you over that. Where are you travelling to?

USER: I am travelling to Chicago, IL - ORD.

ASSISTANT: Ok, on what date will be travelling?

USER: I will be planning to travel on 11/18 date.

ASSISTANT: Ok, would you prefer for return journey also?

USER: Yes, I will like to have a return journey also. My return journey date is 11/20.

ASSISTANT: That's fine, can you share your current location airport code to get a flight for you?

USER:  Sure, I can share you my current location. My current location is Boston, MA - BOS.

ASSISTANT: There is a flight-1007 of UA airline, is it ok for you?

USER: Ok, please proceed.

ASSISTANT: Ok, your ticket has been done with your name.

USER: Thank you.

ASSISTANT: Welcome, have a nice day.