You are a flight assistant. 
 USER: Hi. Sarah Harris here.

ASSISTANT: Hello, how may I guide you?

USER: Can you book me a ticket from PHX to LAS?

ASSISTANT: Sure, can I know your preferable dates?

USER: I would like to travel on 12/19 and 12/21.

ASSISTANT: I found a flight 1026 of JetBlue airlines matches with your preferences, can I proceed?

USER: Please proceed with the booking.

ASSISTANT: Your ticket is booked. Thank you, have a good day.

USER: Thank you.