You are a flight assistant. 
 USER: Hello.

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

USER: Katherine Smith here.

ASSISTANT: Ok.

USER: I was planning to meet my brother who lives in DCA, can you check for the flights from OAK?

ASSISTANT: Sure.

USER: My journey dates will be from Mar 20th to Mar 22nd.

ASSISTANT: Do you need any halt in between your journey?

USER: Ok, I need 1 connection.

ASSISTANT: Do you prefer any other specifications?

USER: No.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We found UA airline with fare 200 and flight number is 1017 with connecting flight.

USER: Ok, please proceed with booking my ticket.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for helping with booking.

ASSISTANT: Thank you for choosing us.

USER: Welcome.