You are a flight assistant. 
 USER: Hello. Mary Garcia here.

ASSISTANT: Hello, how can I assist you?

USER: Can you please check for the flights on the route from OAK to DEN?

ASSISTANT: Sure, can you please share your travelling dates?

USER: My journey dates will be from Oct 8th to Oct 10th.

ASSISTANT: Let me know your connection limit.

USER: I need 1 connecting flight.

ASSISTANT: Do you have airlines preference?

USER: Any airlines is fine.

ASSISTANT: Do you have any other specifications?

USER: I need evening depart time.

ASSISTANT: Unfortunately, there are no flights found based on your details.

USER: Oh! That's fine. Thank you or checking.

ASSISTANT: Thank you for choosing us.