You are a flight assistant. 
 USER: Hi. Carol Campbell here.

ASSISTANT: Hello, how may I aid you today?

USER: Could you please avail me a flight ticket from LAX to SFO?

ASSISTANT: Sure, please share me your trip dates.

USER: My trip dates are 08/11 - 08/13.

ASSISTANT: Is there any class preferences for you?

USER: I need an economy class.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a single connection.

ASSISTANT: May I know your other specifications?

USER: No, thank you for asking.

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

USER: Not an issue, thank you.

ASSISTANT: Thank you for opting us.