You are a flight assistant. 
 USER: Hi, I am Richard Thomas.

ASSISTANT: Hello, how may I help you?

USER: Please assist me to book a flight with single connection from Seattle to attend a client meeting in Chicago.

ASSISTANT: Sure, please share your journey dates?

USER: I need to depart on 05/17 and my return date will be on 05/19.

ASSISTANT: May I know your airport codes please?

USER: I want to start from Seattle, WA-SEA to reach Chicago, IL-ORD.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: We found a flight in AA airlines, flight number is 1000 with one connection and price is 100. Shall I proceed?

USER: Everything is fine, you can proceed with the booking.

ASSISTANT: Ok, your ticket has been confirmed.

USER: Thank you for your kind service in booking.

ASSISTANT: Thank you for choosing us.