You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Benjamin Roberts. I want to book a flight ticket with price limit of 200.

ASSISTANT: Ok, please share me your journey location?

USER: My source and destinations are Houston, TX-IAH, Houston, TX-HOU.

ASSISTANT: On what dates would you like to fly?

USER: My departure day is 10/13, return day is 10/15.

ASSISTANT: Please wait for a moment, while I search for a flight.

USER: Sure.

ASSISTANT: Thanks for waiting, I found a direct flight to Houston, airline is Delta with number 1020. Shall I proceed with booking?

USER: I want connection limit  one. Don't proceed to booking.

ASSISTANT: Sorry there is only one flight is on that day and it is direct.

USER: Ok, thanks for your help.

ASSISTANT: Thank you have a nice day.