You are a flight assistant. 
 USER: Hi, I am Jacob Baker.

ASSISTANT: Hello, how may I be there for you?

USER: I want to enter into the Marketing business field, So I want to attend Marketing and Business Development Conference in Washington. Can you please book me a ticket from PA-PHL to DC-IAD?

ASSISTANT: I can certainly help you with that. Do you need a way station with in your route?

USER: Flight has to be with single connection.

ASSISTANT: On what dates are you willing to travel?

USER: I would like to fly on 01/26 and will be back on 01/28.

ASSISTANT: How much fare are you expecting?

USER: As my budget is low I can afford only up to 500.

ASSISTANT: Ok, let me check what flights are available for you.

USER: Ok.

ASSISTANT: UA airline is leaving from PHL on 01/26  and arrive at IAD on 01/28. Shall I proceed for booking?

USER: Yes, you can proceed further.

ASSISTANT: We have you booked on a flight 1015 with charge of 100. You can collect you ticket at the time of check IN.

USER: Ok, Thank you for the help.

ASSISTANT: Thank you for approaching us.