You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I aid you today?

USER:  I am Brian Robinson want to travel to WA-SEA to meet my brother. Can you book a ticket on Chicago 08/30?

ASSISTANT: Sure, can you please help me with your origin airport code?

USER: I will depart from Chicago PA-PHL.

ASSISTANT: May I know your return date please?

USER: i will return on 09/01.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: There is a flight with Frontier airlines, flight number is 1011 with one connection and price is 100.

USER: Ok, you can proceed.

ASSISTANT: Ok, your ticket has been booked.

USER:  Thank you for booking.

ASSISTANT: Thanks for choosing us.