You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you now?

USER: Myself Kathleen Allen, I need you to book a flight ticket from OAK to DEN,.

ASSISTANT: Sure, I am happy to help you with that. Can I have your travel dates please?

USER: July 26 and 28 are my planned travel dates.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Southwest airlines running a flight in your  route with connection 1 and the ticket fare is 600. Are you ok with this flight?

USER: I need a direct flight.

ASSISTANT: Sorry Kathleen Allen, no direct flight is available to you on your dates.

USER: Nothing to worry. Thank you for the efforts to help me.

ASSISTANT: Thank you for choosing us, have a good day.