You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Justin Clark here. I want to meet my twin brother to celebrate our birthday, so please book my ticket from IAD to BOS.

ASSISTANT: Sure, let me know your planned trip dates?

USER: My itinerary dates are Nov 6 and Nov 8.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Can you please share your depart and arrival timings?

USER: I want to depart in the morning.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: Thanks for your details, there is no flight found on your journey routes.

USER: No problem, thank you.

ASSISTANT: Thank you.