You are a flight assistant. 
 USER: Hi, I am Eric Clark from Detroit.

ASSISTANT: Hello, how may I help you?

USER: I would like to book a flight with a halt to reach Oakland, so please guide me in booking a flight to CA - OAK.

ASSISTANT: Sure, can I know your preferable dates?

USER: My preferable dates are on 05/22 to 05/24.

ASSISTANT: Ok, let me know your source airport code?

USER: My source airport code is MI - DTW.

ASSISTANT: We found a flight from Delta airline with 1 connection and fare is 100. Shall I proceed?

USER: Sure, you can book it.

ASSISTANT: Your ticket is booked and flight number is 1023.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us.