You are a flight assistant. 
 USER: Hello, I am Thomas Green.

ASSISTANT: Hello, how may I help you today?

USER: I need to fly Orlando to attend my conference meeting with my partners, please help me in booking from DCA to MCO?

ASSISTANT: Sure, may I know your journey dates?

USER: I need a connecting flight. My journey is from 12/20 to 12/22.

ASSISTANT: Do you have any price limit?

USER: Yes, it is 200.

ASSISTANT: Sorry, there is no flights found on your given details.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thanks for choosing us.