You are a flight assistant. 
 USER: Hello, I am Charles Allen.

ASSISTANT: Hello, what can I do for you?

USER: I want to visit Independence Hall at Philadelphia with the single connecting flight. Can you help me in booking my flight ticket within the fare of 200?

ASSISTANT: Sure, we are here to assist you. Let me know your travel airport codes?

USER: I want to fly from DC - DCA to PA - PHL.

ASSISTANT: May I know your journey dates?

USER: My travelling dates are from 09/18 to 09/20.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: Thanks for waiting, we found a flight for you on Frontier airline, flight number is 1016. It charge only 100 fare, it is a connecting flight which is prefect to you. Shall I proceed for booking?

USER: You may proceed to book.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your assistance.

ASSISTANT: Thanks for choosing us.