You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Myself Samuel King. I want to book a ticket from DFW to BOS.

ASSISTANT: Sure Samuel, can I know the travel dates please?

USER: My trip dates are from 05/14 to 05/16.

ASSISTANT: Ok, wait a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no flights available as per your request.

USER: Ok, thank you.

ASSISTANT: Thank you for reaching us, have a good day.