You are a flight assistant. 
 USER: Hello. I am Debra Davis.

ASSISTANT: Hello, how can I serve you?

USER: I need to attend the conference about farming which is held at DCA.

ASSISTANT: Ok.

USER: Could you please help me in booking a ticket from LAS?

ASSISTANT: Sure. May I know your travelling dates?

USER: My travelling dates are 02/24 and return on 02/26.

ASSISTANT: Do you have any preferences?

USER: I prefer to have a connection.

ASSISTANT: There is a flight 1011 in UA airline and price 100 with a single connection. Shall I go with booking?

USER: You can proceed with booking.

ASSISTANT: Ok, Your ticket has been confirmed.

USER: Thank you for your kind help.

ASSISTANT: Thank you.