You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: I need to meet my friend in Boston, can you reserve flight ticket from OAK and BOS?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: My travelling dates are May,30 and June,01.

ASSISTANT: Ok, could I have your name please?

USER: Myself Nicholas Walker.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I prefer one connecting flight.

ASSISTANT: Ok, do you have any other specifications?

USER: No.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: That's ok, I will choose any alternate source to reach my destination.

ASSISTANT: Thank you for consulting us, have a great day.

USER: Thank you for the information.