You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I serve you today?

USER: I need to fly Phoenix, AZ-PHX, please book a ticket from Dallas & Fort Worth, TX-DFW.

ASSISTANT: Sure, I will help you to book a flight ticket. Please share me your planned journey dates?

USER: 04/15 to 04/17 are my travelling dates.

ASSISTANT: Do you need any halt in between the journey?

USER: Yes, please provide a halt.

ASSISTANT: Please mention your budget for flight ticket?

USER: Price  limit is 1000.

ASSISTANT: Thanks for the details, please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry there is direct flight available on your journey route. Shall I proceed with booking?

USER: Please don't proceed with booking.

ASSISTANT: Ok, may I know your good name?

USER: I am David Smith.

ASSISTANT: Thank you for visiting us.

USER: Thank you.