You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I need to book a ticket from IAH to CLT. Could you book a ticket?

ASSISTANT: Sure, I will help you. May I know your planned trip dates please?

USER: Departure is Mar, 7 and return date is Mar, 9.

ASSISTANT: Can I have your name please?

USER: I am Stephanie Martin.

ASSISTANT: Do you need a connecting flight?

USER: I prefer connecting flight.

ASSISTANT: May I know your class preference?

USER: I would like to prefer economy class.

ASSISTANT: Do you have any other specifications?

USER: I prefer to fly in a normal-cost airlines.

ASSISTANT: I found an economy class in American Airlines with fare 200 and it is a direct flight. Can I book your ticket?

USER: Please book a flight.

ASSISTANT: Ok, your booking is confirmed with flight number 1025.

USER: Thank you.

ASSISTANT: Thank you for choosing us.