You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I am Larry Evans. I would like to book a flight ticket from BOS to LAX.

ASSISTANT: Sure, can I know your preferable dates?

USER: I am starting on 05/22 and return back on 05/24.

ASSISTANT:  I found a flight 1001 of Southwest airlines matches with your preferences, can I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you for your time.