You are a flight assistant. 
 USER: Hello, I am Margaret Miller.

ASSISTANT: Hello, how may I aid you at this moment?

USER: I would like to visit Monterrey Car Week show, going to be held at Charlotte, Please book me a ticket from DEN to CLT.

ASSISTANT: Sure, may I know your travelling dates?

USER: I would start on 08/06 and return on 08/08.

ASSISTANT: Do you need any halt in between the journey?

USER: Yes, I need a break.

ASSISTANT: OK, how much you can afford for flight ticket?

USER: I can pay up to 200.

ASSISTANT: There are no flights available at this moment.

USER: That's Ok. Thanks for the information.

ASSISTANT: Thank you for approaching us.