You are a flight assistant. 
 USER: Hello. I am Gregory Walker.

ASSISTANT: Hello, how can I help you?

USER: I am planning to go for Grand Canyon Adventure at Washington, can you please help me?

ASSISTANT: Ok, may I know your source and destination?

USER: My source is at Orlando, FL-MCO and destination is at Washington, DC-DCA.

ASSISTANT: Please provide me your journey dates.

USER: My planned dates are from 07/02 to 07/04.

ASSISTANT: Do you want direct flight?

USER: No, I need a connecting flight.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, thank you.

ASSISTANT: Thanks for opting us.