You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight ticket to Philadelphia, with price under 200. Can you help me with it?

ASSISTANT: Sure, may I know your journey dates?

USER: Journey dates are 04/03 to 04/05.

ASSISTANT: May I know your name please?

USER: My name is Andrew Johnson.

ASSISTANT: May I know your source and destination airport codes?

USER: Airport codes are CLT-PHL.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: I found a AA airline, flight number: 1003, price: 100 with one connection. Shall I proceed with this booking?

USER: Yes, you can proceed.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thanks for the help.

ASSISTANT: Thanks for choosing us.