You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am planning attend a Cultural Event in BOS, so please help me in booking a flight ticket from IAD.

ASSISTANT: Sure, I am happy to help you. Please provide your travelling dates.

USER: I would like to fly on Feb 19 and return on Feb 21.

ASSISTANT: Do you prefer any stopover in between journey?

USER: Yes, I need a single connection.

ASSISTANT: Is there any other specifications for you?

USER: No.

ASSISTANT: Can I have your good name?

USER: Myself Jacob Thomas.

ASSISTANT: Sorry, we are unable to provide flights on your journey routes.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for contacting us.