You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to book a flight ticket from IAD to HOU for attending a event. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, help me with the trip dates?

USER: My travelling dates are Dec 1 and Dec 3.

ASSISTANT: May I know your name please?

USER: I am Katherine Young.

ASSISTANT: Do you have any preferences?

USER: I prefer to travel in a connecting flight.

ASSISTANT: We found a flight in an airline Frontier with 1004 number having a single connection. Shall I proceed to book?

USER: You can proceed with booking.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.