You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Can you please reserve a flight ticket for me to travel from BOS to DCA?

ASSISTANT: Ok, please can I know your departure date and return date to book?

USER: I want to start on Jan 9th and will return back on June 11th.

ASSISTANT: May I know your specifications?

USER: I am looking for a business class seat.

ASSISTANT: Ok, please can I know your connection limits?

USER: I am fine with one connecting flight.

ASSISTANT: Ok, Is there anything else you need?

USER: I want to depart in the evening time.

ASSISTANT: Do you have any other specifcation?

USER: No.

ASSISTANT: Sorry, there are no flights available at your locations to book.

USER: No worries, thank you.

ASSISTANT: Thank you for choosing our agency. May I know your name?

USER: My name is Carol Lopez.

ASSISTANT: Thank you Mr. Carol Lopez.