You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Margaret Lewis, planning to visit San Francisco. Can you please help me in booking a flight ticket from CLT to SFO?

ASSISTANT: May I know your desired travel dates please?

USER: My preferable journey dates are from 03/02 to 03/04.

ASSISTANT: Please wait a while.

USER: Sure, take your own time.

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

USER: Please search for ticket fare of 200 on this route.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates with price 200.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thank you for contacting us.