You are a flight assistant. 
 USER: Hello, I am Charles Edwards.

ASSISTANT: Hello, how may I assist you today?

USER: I am planning to join the Brooklyn walking tour in Boston, please book me a plane ticket from IAD to BOS?

ASSISTANT: Sure, could you please mention your travelling dates?

USER: I would leave on 08/12 and arrive on 08/14.

ASSISTANT: Do you need any halt in between your journey?

USER: Yes, I need a break.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your time, sorry, we have a direct flight on that route.

USER: Ok, don't proceed.

ASSISTANT: Thank you for availing us.

USER: Thanks for your assistance.