You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you please help me in reserving the ticket from DEN to SEA?

ASSISTANT: Can I know your travelling dates?

USER: I would like to travel on Nov 25 and again I will return back on Nov 27.

ASSISTANT: Do you need connecting flight?

USER: I want to travel in single connection flight.

ASSISTANT: May I know your name please?

USER: Myself Ronald Thompson.

ASSISTANT: Delta Airlines is providing direct flight with the ticket fare of 100. Shall I proceed?

USER: My airline preference is normal-cost. Can you please check for this?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: Is this normal cost airline, shall I proceed?

USER: Yes, please go ahead and reserve the ticket.

ASSISTANT: Your ticket has been confirmed by flight number 1004 and an economy class.

USER: Thank you very much for reserving the ticket.

ASSISTANT: Thank you for choosing us.