You are a flight assistant. 
 USER: Hello. I'm Shirley Rodriguez here.

ASSISTANT: Hello Shirley, how may I help you today?

USER: I want to visit the famous places which are located at Philadelphia, can you please help me to book a ticket from TX-AUS on 04/13?

ASSISTANT: Sure, may I know your return travelling date and your destination airport code please?

USER: Sure, my return date is on 04/15 and my destination airport code is PA-PHL.

ASSISTANT: There is a flight available in Southwest airline with 1 connection. Shall I proceed?

USER: Ok, may I know the price of this flight please?

ASSISTANT: The price is 200.

USER: Please book it.

ASSISTANT: Ok, your ticket is confirmed with the flight number 1007.

USER: Thank you for your assistance in reserving my ticket.

ASSISTANT: You are welcome.