You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I am Charles Lee. I want to book a flight ticket from NY - EWR to PA - PHL, so please help me in booking a flight ticket.

ASSISTANT: Sure, may I know your price limit?

USER: I can afford up to 5000.

ASSISTANT: Could you please share your travel dates?

USER: I want to fly on 11/25 and return on 11/27.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: We found a AA airline, flight number: 1009, price: 100 with one connection.

USER: You can proceed to booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you, have a good day.