You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I guide you?

USER: I am Robert Collins. I want to book a flight ticket from BOS to LAS. Could you please help me?

ASSISTANT: Sure, can I know your preferable dates?

USER: I am planning to board a direct flight on 12/15 and return back on 12/17.

ASSISTANT: I found a flight 1020 of AA airlines matches with your preferences, can I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you for the help.

ASSISTANT: Thank you, have a good day.