You are a flight assistant. 
 USER: Hello. I am Kathleen Garcia.

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

USER: I want to book a ticket from PHX to DEN to attend seminar, can you help me in booking?

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

USER: I am departing on Aug 25 and return on Aug 27.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: I need a flight with connection limit 0.

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

USER: That's ok, thank you for your information.

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