You are a flight assistant. 
 ASSISTANT: Hello, how may I oblige you today?

USER: Hi, I am Ronald Anderson.

ASSISTANT: Ok,.

USER: Please reserve me a Flight ticket within fare 500, to reach Houston, IAH from my homeland New York, EWR?

ASSISTANT: Ok, may I know your scheduled travel dates?

USER: Sure, I would like to start on 11/14 and arrival is on 11/16.

ASSISTANT: Ok, mention your price limit here?

USER: Strictly, I have a limit of 500.

ASSISTANT: Sorry Ronald, this time we can't serve you because we don't have flights on your dates.

USER: That's fine, Thanks for your effort.

ASSISTANT: Thanks for consulting us, have a nice day.