You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

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

ASSISTANT: Yes, can you share me your dates of travel?

USER: My travelling dates are from Apr 9 to Apr 11.

ASSISTANT: Do you have any other specifications?

USER: I don't have any other preferences.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: I have found an economy class ticket with 2 connections.

USER: Ok, you can proceed with booking.

ASSISTANT: Can I know your name for booking purpose?

USER: My name is Mark Davis.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for contacting us.