You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: I am Ronald Anderson. I am planning to attend my cousin weeding in Seattle, can you please reserve a flight ticket from OAK to SEA?

ASSISTANT: Sure, I am mirthful to help you with that. May I know your journey dates?

USER: My trip dates are Sep 25 to Sep 27.

ASSISTANT: Do you have any particular time for departing and returning?

USER: I need a connecting flight which return in morning.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Sorry to say that, there are no flights found on this route as per your travel dates.

USER: No issue, thank you.

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