You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Susan Jones here, can you please help me in booking the ticket from CLT to OAK? As I'm planning to visit Oakland hills.

ASSISTANT: May I know your desired travel dates please?

USER: Sure, I'm planning to depart from here on 03/11 and return by 03/13.

ASSISTANT: There is a flight with connection limit 1 and fare 300, shall I proceed for booking?

USER: No, my budget is 200 only. Can you please search for the flights according to that?

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: That's ok, thank you for giving the information.

ASSISTANT: Thank you for opting us. Have a nice day.