You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I need to attend client meeting, can you book a ticket from BOS to IAD?

ASSISTANT: Sure, can you please mention with your dates of journey?

USER: Sure, my planned departure and return travel dates are 3rd and 5th of Jan.

ASSISTANT: May I know your good name please?

USER: My name is Joseph Rodriguez.

ASSISTANT: Do you need any other help from my side please?

USER: Yes, I want to depart in the evening time with maximum 1 connection. Check with that details.

ASSISTANT: Please wait for a mean while.

USER: Sure.

ASSISTANT: Sorry Joseph, there is no flight found as per your travelling details.

USER: That's ok, thank you for giving the information anyways.

ASSISTANT: You are welcome.