You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Catherine Nelson. Can you please help me to book a ticket from DCA to LAS?

ASSISTANT: Sure, I will help you. Can you please share your planned journey dates?

USER: My travelling dates will be on Oct 16 to Oct 18.

ASSISTANT: Let me know your connection limit.

USER: I need a connecting flight.

ASSISTANT: Which class would you prefer for your journey?

USER: I am comfortable with any class.

ASSISTANT: Do you have any other preferences?

USER: I want to return in the evening. I need a connecting flight.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, there is a flight available with price 100 and single connection in Jet Blue airline which will depart at 3:00 AM and return at 22:00 PM. Shall I confirm it?

USER: You can proceed.

ASSISTANT: Your ticket has been confirmed in economy class with flight number 1024.

USER: Thank you.

ASSISTANT: Thank you for approaching us.