You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am planning to book a ticket from DEN to HOU to attend seminar, can you help me in booking?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: I am departing on Feb 27 and return on Feb 29.

ASSISTANT: Do you have any connection limit?

USER: I need a flight with connection limit 0, I do not have any other specifications?

ASSISTANT: May I know your name please?

USER: My name is Katherine Harris.

ASSISTANT: There is a direct flight 1024 of United Airlines, can I proceed?

USER: Please proceed for booking.

ASSISTANT: Your booking is done in economy class.

USER: Thank you for your help.

ASSISTANT: You are welcome.