You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I am Scott Martinez. I want to book a flight ticket from MSP to DCA. Could you help me in booking?

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

USER: My travelling dates are from Aug 07-09.

ASSISTANT: Sorry, there are no flights found.

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.