You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

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

ASSISTANT: Sure, I will help you in booking. Can I know your preferable dates?

USER: Ok, please can you book for the dates Nov 21st and 23rd?

ASSISTANT: Do you have any connection limit preference?

USER: Ok, please book a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your name to proceed further?

USER: My name is Dennis Williams.

ASSISTANT: Dennis Williams, here I found a connecting flight with American Airlines and the airfare is about 100. Shall I proceed in booking with flight 1028?

USER: Ok, please book a flight ticket.

ASSISTANT: For an economy class your ticket is booked and the departure time is 3:00AM and the arrival time is 15:00PM.

USER: Thank you for assisting me with my concern.

ASSISTANT: Thank you for connecting us.