You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I oblige you today?

USER: I am Jacob Young from Washington. Could you please book a flight ticket to Philadelphia, PHL from IAD within the fare of 5000?

ASSISTANT: Sure, we are gleeful to help you to book a flight ticket.

USER: Thank you.

ASSISTANT: Can you please mention your travelling dates?

USER: I want to travel on 02/20 and return back on 02/22.

ASSISTANT: Ok, Please share your connection limit.

USER: I prefer a connected flight.

ASSISTANT: Thanks for your required information, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, we found a flight in UA airline of economy class and the cost is 200 which matches to your details. Can I proceed for booking?

USER: Yes, proceed with the booking.

ASSISTANT: Sure, your booking has been done and the flight number is 1002.

USER: Thank you for the help.

ASSISTANT: Thank you for opting our service.