Hello. Myself Frank Hill.
user
Hello. How can I assist you?
assistant
I would like to meet my sister at Washington, will you help me in booking the flight ticket from LGA to IAD?
user
  Sure, I will help you in booking the ticket. May I know your travelling dates please?
assistant
My travelling dates are Aug 12 and Aug 14.
user
May I know your connection limit?
assistant
I need a flight with single connection.
user
 Do you have any class preference?
assistant
I am comfortable with any class.
user
Sorry to inform you that no connecting flights were available on your travel dates.
assistant
Ok, not an issue. Thank you for your information.
user
 Thank you for availing us.
assistant