You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

USER: I am looking for a flight from OAK to DTW, can you help me out?

ASSISTANT: Sure, I am glad to help you out. Pleas provide me your trip dates.

USER: My travelling dates are from Sept 13 to Sept 15.

ASSISTANT: May I know your name to proceed further?

USER: I am Angela Collins.

ASSISTANT: Do you have any requirement?

USER: I need my return flight in evening time.

ASSISTANT: May I know your connection limit?

USER: I am looking for connecting flight.

ASSISTANT: Sorry Angela Collins, there is no flight in your route.

USER: That's ok, no problem. Thank for your help.

ASSISTANT: Thank you for reaching us.