You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: I am planning to visit Dallas with my friends. Can you do the reservation?

ASSISTANT: Sure. May I know your travelling dates?

USER: Trip dates are 12/17 and 12/19.

ASSISTANT: Can you share me your airport codes?

USER: My airport codes are EWR-DFW.

ASSISTANT: May I know your good name to book a ticket?

USER: Daniel Lopez here.

ASSISTANT: Do you have any preferences?

USER: Price should not cross 200. I need break in my journey.

ASSISTANT: There is a flight 1017 in Frontier airline and price 200 with a connection. Shall I proceed?

USER: Go ahead.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.