You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you today?

USER: Can you help me to book a flight ticket with the name William Roberts to attend food festival with in the fare limit 500?

ASSISTANT: Sure. Please provide your travelling dates.

USER: My travelling dates on 05/13 to 05/15.

ASSISTANT: May I know your journey airport codes?

USER: My airport codes are from Phoenix, AZ-PHX to Austin, TX-AUS.

ASSISTANT: Can you please mention if your prefer a connection?

USER: I prefer one connection.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: Thank you for being wait. We found a UA airline available according to your request with flight number 1003 and price is 100.

USER: That's perfect, you can proceed with the booking.

ASSISTANT: Your booking is done.

USER: Thanks for your quick response.

ASSISTANT: Thank you for consulting us.