You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Deborah Lewis. Can you book a flight ticket from MSP to OAK?

ASSISTANT: Sure, please share your connection limit.

USER: I need single connection.

ASSISTANT: Let me know your travelling dates.

USER: 11/20 and 11/22 are my travelling dates.

ASSISTANT: Do you have any specifications?

USER: I want to depart at afternoon time.

ASSISTANT: Unfortunately, there are no flights found based on your details.

USER: That's ok, not an issue. Thank you.

ASSISTANT: Thank you for choosing us.