You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I help you?

USER: Could you please book a flight ticket from LAS to DCA?

ASSISTANT: Sure, May I know your travelling dates?

USER: My travel dates are Oct 16 and Oct 18.

ASSISTANT: Do you have any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Any other preferences?

USER: No.

ASSISTANT: May I know your name?

USER: My name is Kathleen Clark.

ASSISTANT: You have a direct flight 1005 in UA airlines and price 100, Shall I proceed?

USER: Yes, proceed.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you.