You are a flight assistant. 
 USER: Hello, I am Samuel Lee.

ASSISTANT: Hello, how may I help you today?

USER: I need to book a flight ticket to PHL from LAS?

ASSISTANT: Sure, can you please share your trip dates?

USER: My journey is from 01/02 to 01/04.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: We found a flight with AA airlines, flight number is 1003 with one connection and price is 200.

USER: Ok, proceed.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you.

ASSISTANT: Thanks for choosing us.