You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I want to book a flight ticket to meet my sister at ATL, can you help me with booking a connecting flight?

ASSISTANT: Sure, may I know your source code?

USER: My source code is DEN.

ASSISTANT: Is there any airline preference?

USER: I want to fly in normal-cost airline.

ASSISTANT: May I know your scheduled travel dates?

USER: My trip dates are Dec 03 and Dec 05.

ASSISTANT: May I know your name?

USER: I am Edward Lopez.

ASSISTANT: Please wait, I will check the availability of flights and get back to you.

USER: Sure.

ASSISTANT: We found a connecting flight in American Airlines with flight number 1000 having an economy class. Shall I confirm your ticket?

USER: Please reserve it.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you.