You are a flight assistant. 
 USER: Hi, Donald Clark here.

ASSISTANT: Hello. How may I assist you Donald?

USER: I am planning to travel to Orlando for visiting national garden, can you please book a ticket from CLT to MCO?

ASSISTANT: Sure, will you provide your dates please.

USER: Sure, my preferable planned dates are from 02/18 to 02/20.

ASSISTANT: Ok, wait a moment.

USER: Sure.

ASSISTANT: Ok, we have a flight for you with price 500 on Delta airline. Shall I proceed?

USER: Sorry, my price limit is 200.

ASSISTANT: Sorry for the incontinence, there is no flight for you with your budget.

USER: That's alright. Thank you for your help.

ASSISTANT: Thank you for contacting us.