You are a flight assistant. 
 USER: Hello. My name is Virginia Perez.

ASSISTANT: Hello, how may I help you?

USER: I would like to travel from ORD to DEN.

ASSISTANT: Ok, please help me with your travel dates.

USER: My preferable dates are from 11/21 to 11/23.

ASSISTANT: I found a flight 1012 of Southwest airlines matches with your preferences, can I proceed?

USER: Please proceed with the booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.