You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: I need to book a flight ticket from DEN to HOU. Can you please book a flight ticket?

ASSISTANT: Sure, May I know your travelling dates?

USER: My journey dates are Sept 02 and Sept 04.

ASSISTANT: Do you have any preferences?

USER: I prefer a departure time at afternoon.

ASSISTANT: May I know your name?

USER: I am Susan Phillips.

ASSISTANT: You have a flight 1014 in AA airline and price 400 with 2 connections, Shall I proceed?

USER: Go ahead.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for your help.

ASSISTANT: Thank you.