You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Catherine Lewis. I am planning to attend a press conference at Orlando, help me in booking my flight ticket with 200 price limit.

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: May travelling dates will be 01/18 to 01/20.

ASSISTANT: Ok, could you help me with your journey codes please?

USER: My journey airport codes are from DC-DCA to FL-MCO.

ASSISTANT: Wait a minute please.

USER: Sure.

ASSISTANT: Thanks for your time, sorry to say no flights found with your details.

USER: Its ok, thank you for your assistance.

ASSISTANT: Thank you for reaching us, have a nice day.