You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I serve you?

USER: I am Raymond Moore, want to attend my brother-in-law's memorial service at Chicago, IL - ORD on 01/21. Can you help me in booking my reservation?

ASSISTANT: Sure, we are help to you, may I know your origin airport code and date?

USER: Ok, I want to start my journey from Oakland, CA - OAK and returning on 01/23.

ASSISTANT: Thanks for giving your details, give me a moment.

USER: Sure.

ASSISTANT: Thanks for your waiting, we found a flight on your details.

USER: Ok, Please provide me the flight details?

ASSISTANT: Airline: Delta, flight number:1000, and one connection limit with the price of 100. Shall I proceed for booking?

USER: Ok, you can proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you, we are happy with your service.

ASSISTANT: Thanks for choosing us, have a nice day.