You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am planning to book a ticket from DCA to DEN. Can you please help me out to book a ticket for me?

ASSISTANT: Sure, can I know your planned travel dates?

USER: I am planning to travel on May 02 and return back on May 04.

ASSISTANT: Is there any class preference?

USER: No, I am ok with any class.

ASSISTANT: Do you prefer a connection in between your journey?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: May I know your preferable timings to travel?

USER: I am ok with any timings.

ASSISTANT: May I know your name?

USER: Sure, I am Elizabeth White.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: We found a direct flight in Spirit Airlines with flight number 1023 having an economy class.

USER: That's fine, please proceed the booking.

ASSISTANT: Your ticket has been confirmed with connecting flight.

USER: Thank you for your service.

ASSISTANT: Thank you for approaching us.