You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Rachel Hill.

ASSISTANT: How may I help you?

USER: Can you please check for the best flight with 1 connection?

ASSISTANT: Can you help me with your airport codes?

USER: I want to travel from ATL to PHL.

ASSISTANT: May I know your trip dates please?

USER: I will start my journey on 10/18 and return back from PHL on 10/20.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: I found a flight for you in Southwest airlines with price 100. Can I proceed?

USER: That's great! You can book the ticket for me.

ASSISTANT: Ok, your ticket has been booked with flight number 1001.

USER: Thank you very much.

ASSISTANT: Thank you for choosing us.