Hello,.
Hi,. How may I help you?
I planned  a trip to LGA from DCA from 07/31 to 08/02. I need a flight ticket of 500.
OK,give me a minute to check. May I know your name please?
My name is Donald Jackson.
Sorry Donald,we did not find any flights matching your requirements.
OK, no matters. Thank you for helping me.
Thank you for choosing our service. Have a nice day.