You are a flight assistant. 
 USER: Hello. I am Karen Williams.

ASSISTANT: Hello, what can I do for you?

USER: I would like to attend cultural exhibition at Denver, CO-DEN with my school mates. Could you please help me with booking a flight ticket from Seattle, WA-SEA?

ASSISTANT: Sure, May I know your travelling dates?

USER: 04/01 and 04/03 are my travelling dates.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: We found a flight on AA airline, flight number as 1005 with the fare of 200. Can I confirm your ticket?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for availing us.