You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Michelle Hernandez, I want to book a flight ticket to BOS from ATL for attending a seminar in the university. Can you please help me to book a flight ticket?

ASSISTANT: Sure, I will help you in booking the ticket.

USER: Thank you.

ASSISTANT: May I know your travelling dates please?

USER: Sure, my travelling dates are 03/14 and 03/16.

ASSISTANT: Sorry, there are no flights found.

USER: Not a problem, anyway thank you for the information.

ASSISTANT: Thank you for choosing us.