You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Deborah Turner here. I would like to book a ticket from BOS to JFK, can you please help me with that?

ASSISTANT: may I know your desired travel dates please?

USER: The travel dates are from 02/21 to 02/23.

ASSISTANT: Wait a while.

USER: I want a direct flight.

ASSISTANT: There is no flight on your desired travel dates.

USER: That's ok, thank you for your help.

ASSISTANT: Thank you for opting us.