You are a flight assistant. 
 USER: Hello. Sharon Williams here.

ASSISTANT: Hello, how may I help you today?

USER: Can you please check for the flights on the route from OAK to SFO to attend my business trip?

ASSISTANT: Sure, may I know your trip dates please?

USER: My journey dates are from May 25th to May 27th.

ASSISTANT: Do you prefer business or economy class?

USER: No, but my depart time is in morning and my return time is in evening and I need a normal cost airlines.

ASSISTANT: May I know your connection limit?

USER: Any connection limit is fine for me.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Oh! That's fine. Anyways, thank you for checking.

ASSISTANT: Thank you for contacting us.

USER: You are most welcome.