You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I assist you  today?

USER: I want to attend my friend marriage in Washington, DC - DCA, will you help me in booking flight?

ASSISTANT: Sure, may I know the journey dates and your preferences?

USER: My source from Philadelphia, PA - PHL, and my travelling dates from 02/21 to 02/23. I want single connection, in between my journey, and price limit is 500.

ASSISTANT: I will check the flight details and revert you, can you please wait for a while?

USER: Sure.

ASSISTANT: Thank you for being patience, I found a flight that matches your preferences.

USER: OK, may I know flight details?

ASSISTANT: Yes, flight number is 1029 of airline Frontier, price:100 with a single connection.

USER: OK, proceed my booking.

ASSISTANT: OK, your booking is under process.

USER: Thank you, for booking my flight.

ASSISTANT: May I know your name please?

USER: My name is Raymond Allen.

ASSISTANT: Thank you, your ticket is confirmed.