You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am Nicole Robinson. I want to enjoy my holidays at Phoenix, PHX. Can you please book a ticket from Las, Vegas LAS?

ASSISTANT: Sure, may I know your trip dates?

USER: Trip dates are 04/20 to 04/22.

ASSISTANT: Okay, please wait for a minute.

USER: Sure.

ASSISTANT: We found a flight on frontier airline,flight number 1000 with the fare of 100.

USER: You can proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.