You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Cynthia King. I would like to book a flight ticket from OAK to BOS to meet my uncle. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, let me know your travelling dates.

USER: My travelling dates are Mar 8 and Mar 10.

ASSISTANT: Please share your connection limit.

USER: I need a connecting flight.

ASSISTANT: Do you have any specifications?

USER: Yes, I want to return in the afternoon.

ASSISTANT: Sorry, there are no flights available based on your details.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for choosing us.