You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How  can I help you?

USER: Can you please help me in changing my recent recent reservation?

ASSISTANT: Sure, may I know your name please?

USER: Myself Joshua Brown. My travelling dates are 12/11 and 12/13.

ASSISTANT: Can You please tell me your trip codes please?

USER: My trip codes are MCO to JFK. Please check with direct flight.

ASSISTANT: I am sorry no flights found on your preferable connection limit.

USER: Ok, fine not an issue.

ASSISTANT: Thank you.

USER: Thank you.