You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a flight ticket from Houston with a price limit of 500. Could you help me in booking a flight ticket with a single connection?

ASSISTANT: Sure, kindly mention your travel dates?

USER: I would like to fly on 05/24 and return date on 05/26.

ASSISTANT: May I know your airport codes?

USER: I am planning to visit Houston Zoo in TX - HOU and source from TX - IAH.

ASSISTANT: There is a flight with your requirement, airline is Delta with price 300 and single connection. Shall I proceed with booking?

USER: You can proceed to booking.

ASSISTANT: Your booking is done. May I know your name?

USER: My name is Karen Taylor.

ASSISTANT: Thanks for reaching us, have a good day.

USER: Thanks for your service.