You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: I want to book a flight ticket from Austin AUS to Oakland OAK. Can you make a reservation for me?

ASSISTANT: Sure, May I know your travelling dates?

USER: Ok, my itinerary dates are on Apr 01 and return on Apr 03.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a single connecting flight.

ASSISTANT: Is there any other preferences?

USER: No.

ASSISTANT: May I know your name?

USER: Yes, I am Sharon Hall.

ASSISTANT: Sorry, There are no flights found on your data.

USER: Ok, not an problem. Thank you for your information.

ASSISTANT: Thank you.