You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I want to book a flight ticket from Charlotte CLT to OAK. Can you find a ticket for me?

ASSISTANT: Sure, May I know the travelling dates?

USER: Ok, my planned trip dates are on Aug 10 and return on Aug 12.

ASSISTANT: Do you have any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Is there any other requirements?

USER: No.

ASSISTANT: May I know your name?

USER: Yes, I am Anna Anderson.

ASSISTANT: Please wait a minute.

USER: Sure, I will wait.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, not an problem. Thank you for your information.

ASSISTANT: Thank you for availing us.