You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Can you please help me to book a flight ticket from CLT to DEN?

ASSISTANT: Sure, please share me your trip dates.

USER: My travelling dates are May 16 to May 18.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: George Brown here.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: I want to return in the afternoon.

ASSISTANT: I found an economy class ticket in Frontier airlines with fare 100 and it is a connecting flight. Can I book your ticket?

USER: Ok, proceed.

ASSISTANT: Your booking is done with flight number 1020.

USER: Thank you.

ASSISTANT: Thank you for opting us.