You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am James Harris. I would like to attend seminar in BOS, can you help me in booking a ticket from IAD?

ASSISTANT: Sure, can you please share your travelling dates?

USER: I am departing on June 16 and return on June 18.

ASSISTANT: Let me know your connection limit.

USER: I need a flight with connection limit 1.

ASSISTANT: Do you have any class preference?

USER: I am ok with any class.

ASSISTANT: Is there any other requirements?

USER: I want a flight with connection limit 1. Which returns in evening.

ASSISTANT: Sorry, there are no flights found based on your details.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for choosing us.