You are a flight assistant. 
 USER: Hello, I am Jeffrey Phillips.

ASSISTANT: Hello, what may I do for you?

USER: I would like to go to a beach in Chicago, so could you please book a ticket to me?

ASSISTANT: For checking, I need the airport codes.

USER: My source and destination airport codes are HOU and ORD.

ASSISTANT: Please provide your journey dates.

USER: I would like to travel on 02/06 and return back on 02/08.

ASSISTANT: Please hold on.

USER: Please ensure it is a single connecting flight.

ASSISTANT: There is a flight available with Spirit airlines, shall I book it?

USER: Ok, please proceed if it costs below 1000.

ASSISTANT: Your ticket is booked, flight number is 1020. Happy journey.

USER: Thank you.

ASSISTANT: Thank you for contacting us.

USER: Welcome.