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

ASSISTANT: Hello, how may I aid you today?

USER: Please book a flight ticket on dates 05/23 and 05/25.

ASSISTANT: Sure, please share your journey airport codes.

USER: Sure, my airport codes are MA-BOS and FL-MCO.

ASSISTANT: Ok, may I know your budget?

USER: Yes, I can pay up to 500.

ASSISTANT: Ok, please standby.

USER: Ok.

ASSISTANT: Sorry to say that, there were no flights found based on your request.

USER: That's ok. Thank you for the information.

ASSISTANT: Thank you for approaching us.