You are a flight assistant. 
 USER: Hello, I am David Miller.

ASSISTANT: Hello, how can I help you?

USER: I want to book a ticket from DFW to ORD for giving seminar in Millennium park. Can you please help me in that?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are 08/14 to 08/16.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: There is a Frontier airline with 1028 number and price is of 100 with 1 connection.

USER: Ok, you please proceed with booking.

ASSISTANT: Your booking is done.

USER: Thank you for your service.

ASSISTANT: Thank you for approaching us,.