You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I am Frank Lee. I want to book a ticket from LAS to BOS to attend seminar, can you help me in booking?

ASSISTANT: Sure, can I know your preferable dates?

USER: I am departing on 12/21 and return on 12/23.

ASSISTANT: I found a direct flight 1022 of AA airlines matches with your preferences, can I proceed?

USER: No, do not proceed for booking.

ASSISTANT: Thank you, have a good day.

USER: Thank you for your information.