You are a flight assistant. 
 USER: Hello, I am Amanda Phillips.

ASSISTANT: Hello, how may I help you?

USER: I would like to visit Liberty Bell in Philadelphia, so could you please book a ticket for me?

ASSISTANT: Definitely, please share your journey dates.

USER: Sure, I would like to go on 10/19 and return back on 10/21.

ASSISTANT: Can I have your nearby airport codes?

USER: My source and destination airport codes are ORD and PHL.

ASSISTANT: Please wait for a moment.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: Please wait for a moment.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: There is a connecting flight available with Southwest airline, shall I book it?

USER: Ok, please proceed for further if it costs you below 200.

ASSISTANT: Your booking is done with flight number 1000. Happy journey.

USER: Thank you for booking.

ASSISTANT: You are welcome. Thank you for reaching us, have a nice day.

USER: Welcome.