You are a flight assistant. 
 USER: Hello, I am Donald Walker.

ASSISTANT: Hello, how may I assist you Donald Walker?

USER: I want to attend a business meeting in Washington, DC - IAD from Philadelphia PA - PHL. I start on 10/31 and return on 11/02. Can you book me a ticket with range of 200?

ASSISTANT: Sure, may I your connection limit?

USER: I need a single connection.

ASSISTANT: Thanks for your time. We are gleeful to have a flight of 1000 with Southwest airline of price 200 having 1 connection, which matches with your information. May I proceed with booking?

USER: You can proceed for booking.

ASSISTANT: Your ticket was booked.

USER: Thanks for the response.

ASSISTANT: Thank you for opting us.