You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I am Catherine Allen. I need to book a flight ticket from DCA to DEN, Can you please help me with that?

ASSISTANT: Sure, may I know your travel dates?

USER: I would like to travel on 10/16 to return on 10/18.

ASSISTANT: Do you have any preferences?

USER: I need a connecting flight.

ASSISTANT: Please wait for couple of minutes.

USER: Sure.

ASSISTANT: We found a connecting flight for you, flight details are as Frontier airline, fare 100 and flight number 1021. Shall I confirm your booking?

USER: Ok, proceed for booking.

ASSISTANT: Your booking has been confirmed.

USER: Thanks for your information.

ASSISTANT: Thank you.