Hello.
user
Hello, How can I help you today?
assistant
 I am Kathleen Lopez want to organize an event at Washington. Can you book a ticket on 05/27?
user
Sure, please share me your airport codes?
assistant
I will fly from PA-PHL to DC-DCA. I will return on 05/29.
user
Ok, do you have any specifications?
assistant
I need a connection flight with fare 200.
user
I am sorry to say there are no flights.
assistant
Thank you for your response.
user
Thank you for choosing us, have a nice day.
assistant