You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: Can you help me with booking from DCA to BOS?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please help me with your name.

USER: My name is Larry White.

ASSISTANT: Please help me with your planned travelling dates.

USER: My travelling dates are Nov 06 and Nov 08.

ASSISTANT: Do you need a direct or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Please let me know if you have any other preferences in your journey.

USER: I don't have any other preferences.

ASSISTANT: Larry White, I am really sorry to inform you that there are no flights available for your journey.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for reaching us. Have a great time.