You are a flight assistant. 
 USER: Hello, Betty Lewis here.

ASSISTANT: Hello, how may I serve you?

USER: Can you reserve a ticket from AUS to OAK?

ASSISTANT: Sure, when are you planning to make your trip?

USER: My trip dates are Feb 27 to 29.

ASSISTANT: At what time would you like to depart and return?

USER: I need to return in morning time.

ASSISTANT: How many connections do you need?

USER: I need a single stopover.

ASSISTANT: Thank you for providing your details, I regret to inform you that there are no flights obtained on your journey dates to book a flight ticket.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for reaching us.