You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me in booking my flight from PHL to reach DCA?

ASSISTANT: Sure, please share me your planned journey dates?

USER: Sure, my travel dates are Dec 22nd and Dec 24th.

ASSISTANT: May I know your connection limit?

USER: I need a single connecting flight.

ASSISTANT: May I know in which class would you like to travel?

USER: I prefer economy class.

ASSISTANT: Do you have any other requirement?

USER: No.

ASSISTANT: May I know your name?

USER: Myself Michelle Young.

ASSISTANT: I found a connecting flight of 1014 of airline UA, fare is 300 and class is economy. Shall I proceed with booking?

USER: Ok, please proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.