You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Lisa Miller.

ASSISTANT: How can I assist you?

USER: I need to book a ticket from SEA to DEN, can you help me/.

ASSISTANT: Ok, may I know your travelling dates?

USER: My trip dates are Oct 23 to 25.

ASSISTANT: May I know your airline preference?

USER: I need normal-cost airline.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Here is a connecting flight with fare 200 and 1008 as flight number provided by American Airline. Shall I proceed with booking?

USER: Ok, proceed.

ASSISTANT: Ok, your ticket is confirmed in economy class.

USER: Thank you.

ASSISTANT: Thank you for reaching us.