You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I serve you?

USER: Can you please help me with booking a flight ticket from DCA to PHX?

ASSISTANT: Sure, please provide your planned travel dates.

USER: My travel dates are Dec 13 and 15.

ASSISTANT: Do you prefer either economy or business class?

USER: I am comfortable with any class.

ASSISTANT: Is there any specific time are you looking for your depart and return?

USER: No, but I need a direct flight.

ASSISTANT: Sure, may I know your name?

USER: My name is Amanda Wright.

ASSISTANT: We have a direct flight which departs at 18:00 PM and returns at 10:00 AM, costing you 200. Shall I proceed with it?

USER: You can proceed with booking.

ASSISTANT: Your ticket is confirmed in economy class of Frontier airlines flight, number 1016.

USER: Thanks for the help.

ASSISTANT: Thank you for allowing us to serve you.