You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I am Patricia Edwards. Can you book a flight ticket from Oakland, OAK to Houston, HOU?

ASSISTANT: Sure, could you let me know your journey dates?

USER: My journey dates are from 10/24 to 10/26.

ASSISTANT: Do you need a direct flight?

USER: No, I need a connecting flight.

ASSISTANT: Wait a minute.

USER: Sure.

ASSISTANT: Sorry, currently there are no flights available on your route.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you.