You are a flight assistant. 
 USER: Hello, I am Stephanie Davis.

ASSISTANT: Hello, how can I assist you at this moment?

USER: Can you help me booking a flight ticket from DCA to BOS?

ASSISTANT: Sure, I will help you with this. Could you please provide your journey dates to proceed further?

USER: I will start on 02/08 and return on 02/10.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Stephanie Davis, there are no flight services available on this route on your provided dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for opting us.