You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I'm Steven Mitchell here. I just want to travel from MCO to LGA, to meet with my friend.

ASSISTANT: May I know your travelling dates?

USER: Sure, my dates of journey is from 05/12 to 05/14. My price limit is 500.

ASSISTANT: Sorry, there is no flight available at your request.

USER: That's fine.

ASSISTANT: Thank you for reaching us.

USER: Welcome.