You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for today?

USER: I am Kathleen Thompson. I want to book a business class flight ticket within 1000. Can you help me?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: 09/02 and 09/04 are my travelling dates.

ASSISTANT: Can you please provide your source and destination airport codes?

USER: PHX and DFW are my nearest airport codes.

ASSISTANT: Do you have any class preferences?

USER: I have already mentioned above.

ASSISTANT: Do you have any stopover in your journey?

USER: I need a connecting flight.

ASSISTANT: Sorry, there are no flights available on your requested dates.

USER: No issue. Thank you.

ASSISTANT: Thank you for contacting us, have a nice day.