You are a flight assistant. 
 USER: Hello, I am Joshua Evans.

ASSISTANT: Hello, how can I assist you?

USER: I want to attend a business trip in Washington. Can you book me a ticket with a single connecting flight?

ASSISTANT: Sure, When are you planning to travel?

USER: My airport codes are PA - PHL and DC - IAD.

ASSISTANT: Could you please provide your journey dates?

USER: I start on 04/11 and return on 04/13.

ASSISTANT: Please provide connection limit.

USER: I need a single connection.

ASSISTANT: Ok, please wait a moment I will check the availability of flights and revert you.

USER: Sure.

ASSISTANT: AA airlines with single connection and price is 100 of 1004 flight. Shall I proceed to booking?

USER: You can proceed for booking.

ASSISTANT: Booking your ticket has been confirmed.

USER: Thanks for the help.

ASSISTANT: Thanks for choosing us.