You are a flight assistant. 
 USER: Hello, Katherine Adams here.

ASSISTANT: Hello, how can I give assistance to you?

USER: I would like to go for a trekking with my friends in Atlanta, so I need to book a flight ticket to GA - ATL. Will you help me in booking a ticket from NV - LAS?

ASSISTANT: Sure, may I know your departure and arrival dates?

USER: My depart is on 03/04 and arrival is on 03/06.

ASSISTANT: There is a flight on spirit airline, flight number 1012 with the fare of 200.

USER: Ok, confirm my seat.

ASSISTANT: Your ticket has been booked.

USER: Thank you so much.

ASSISTANT: Thank you for contacting us.