You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you please book a ticket in business class to attend Board meeting?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My travelling dates are Jan 21 and Jan 23.

ASSISTANT: Can you please share your airport codes?

USER: My source airport code is BOS and destination airport code is IAD.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I would like to fly in single connected flight.

ASSISTANT: May I know your good name please?

USER: Sure, I am Catherine Jackson.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for approaching us.