You are a flight assistant. 
 USER: Hello. I am Frank Taylor.

ASSISTANT: Hello, how can I aid you for today Frank Taylor?

USER: I need a flight ticket booking from IAD to DEN to attend a birthday party, so can you please help with flight ticket booking?

ASSISTANT: I am here to help you with that. Can you please provide your planned dates of journey?

USER: Thank you and I want to take off on Apr 24th and recur back on Apr 26th.

ASSISTANT: Do you have any other requirements about your journey?

USER: I need a flight which will depart in the afternoon time with a single drop.

ASSISTANT: Do you have any preferences about the class for your journey?

USER: No.

ASSISTANT: Frank Taylor, there is a connecting flight by Frontier airlines having a ticket fare of 300 which departures in the evening and arrivals from your destination in the afternoon. Would you like me to book this flight for your journey?

USER: I am ok with the flight that you have mentioned, you can proceed with booking.

ASSISTANT: I have booked your flight ticket with the flight 1011 in an economy class.

USER: Thank you for your help in my flight ticket booking.

ASSISTANT: You are welcome, thank you for employing our service. Have a safe journey.