You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am William Perez.

ASSISTANT: How may I assist you?

USER: I would like to visit Freer Gallery of Arts in Washington DC to study about Asian artistics. Will you please book a flight ticket from BOS to IAD?

ASSISTANT: Yes, I can help you with that. Can I know your travelling dates?

USER: Sure, my travel dates are 09/10 and 09/12.

ASSISTANT: Give me a moment, while I get back to you. I have found a flight for you with a price of 200 and a connection of 1. Can I book the ticket for you?

USER: Can you please check with connection 0?

ASSISTANT: Sorry, there is no flight with connection 0.

USER: It's ok fine. Thank you for your information.

ASSISTANT: Sorry for the inconvenience. You are welcome.

USER: It's ok.