You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Kathleen Lewis here, I am looking for a flight on the route to Philadelphia for my interview, can you please find any airlines providing service on this route?

ASSISTANT: Sure, we are here to help you. Let me know  your connection limit?

USER: I need a halt in my journey.

ASSISTANT: When are you planning to move?

USER: As my interview is on 04/19, I would like to fly from 04/18 to 04/20.

ASSISTANT: Please help me to codes of the airport, where you want to travel and catch the flight.

USER: Sure, it is a round trip to Philadelphia PA-PHL.

ASSISTANT: May I know your price limit?

USER: I can bear up to 200.

ASSISTANT: OK, please wait a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, We found a southwest airlines with single connection and price is 100 of 1015 flight. Shall I proceed for booking?

USER: It is perfect, please go ahead.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your quick response.

ASSISTANT: Thank you for choosing us.