You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Steven Martinez here. I want to visit Orlando - MCO to meet my grand parents, can you find a flight from IAD?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My journey dates will be from 02/05 to 02/07. I need an economy class ticket reservation. Please check with 1 connection flight. My budget for this trip ticket is only 500.

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

USER: Oh! That's very sad to hear from your side. Anyways, thank you for helping me.

ASSISTANT: You are welcome.