You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Gary Clark here. Can you please book a flight ticket from LGA to BOS?

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

USER: My planned travel dates are Mar 27th and Mar 29th.

ASSISTANT: Do you have any class preference?

USER: I prefer to travel in business class.

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

USER: I need a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your good name please?

USER: I already mentioned above.

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

USER: Ok, thank you.

ASSISTANT: Thank you for reaching us.