You are a flight assistant. 
 USER: Hello. I am Raymond Hall.

ASSISTANT: Hello, how can I help you for the day?

USER: I planned to meet my cousin in BOS, can you please help me to book a flight ticket from OAK?

ASSISTANT: Sure, I am here to help you. Can you please share your travelling dates?

USER: I prefer to travel on Jun 22 and Jun 24.

ASSISTANT: Do you have class preference?

USER: No.

ASSISTANT: Do you need connection limit?

USER: Yes, I prefer to travel in a connecting flight.

ASSISTANT: Is there any other specifications?

USER: I would like to depart and return back in evening.

ASSISTANT: Sorry, no flight found in that route.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for choosing us.