You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Carolyn Campbell. I am planning to book a ticket to attend a meeting at SEA. Can you please help me out from CLT?

ASSISTANT: Sure Carolyn, can you please share me with your dates of travel?

USER: I would like to travel on Apr 21 and return back on Apr 23.

ASSISTANT: How much you can afford for this flight?

USER: My budget is below 200.

ASSISTANT: Sorry Carolyn, there is no flight found as per your travelling details.

USER: That's fine, thank you for your service.

ASSISTANT: You are welcome.