You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I assist you?

USER: I want to book a flight ticket to Oakland, please help me with a connecting flight.

ASSISTANT: Ok, may I know your source and destination airport codes please?

USER: I want to fly to CA- OAK from WA- SEA.

ASSISTANT: Can you please share your trip dates please?

USER: My travelling dates are from 02/28 to 03/01.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: May I know your name please?

USER: I am Melissa Green.

ASSISTANT: Green, no flights has been found on your requested dates.

USER: No issues, thank you.

ASSISTANT: Thank you for choosing us.