You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a ticket from OAK to CLT to attend Innovation festival to share my ideas.

ASSISTANT:  Sure, I will help you in booking the ticket. May I know your travelling dates?

USER: My trip dates are 09/15 and 09/17.

ASSISTANT: Is there any connection limit for you?

USER: I need only direct flight.

ASSISTANT: Are there any other specifications?

USER: Departure time should be afternoon.

ASSISTANT:  May I know your name for the documentation process?

USER: Pamela Lopez here.

ASSISTANT: There are no flights found on your specified travel dates.

USER: No problem, thanks for the information.