You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you out?

USER: Can you please avail me a flight ticket from SFO to BOS?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My trip dates are 02/04 - 02/06.

ASSISTANT: Can I know your name please?

USER: William Parker here.

ASSISTANT: Do you need any specifications?

USER: I need a direct flight.

ASSISTANT: Sorry, there are no flights found.

USER: No issues, thank you.

ASSISTANT: Thank you for reaching us.