You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am looking for a flight from OAK to CLT, can you please help me in booking?

ASSISTANT: Sure, can you share your travel dates please?

USER: My travelling dates are July 15 and July 17.

ASSISTANT: May I know your good name?

USER: My name is Helen Garcia.

ASSISTANT: Please share your connection limit.

USER: I need a connecting flight.

ASSISTANT: Do you have any more specifications?

USER: I want to depart in afternoon.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for contacting us.