You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I would like to book a ticket from BOS to AUS, can you please help me with that?

ASSISTANT: May I know your travelling dates?

USER: The travel dates are from 07/02 to 07/04.

ASSISTANT: Do you have any specification?

USER: I need a direct flight.

ASSISTANT: Can I know your name?

USER: Kathleen Thomas here.

ASSISTANT: Sorry, there is no flight with your requirement.

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

ASSISTANT: Thank you.