You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Please book a flight ticket from AUS to OAK?

ASSISTANT: May I know your travelling dates?

USER: My journey dates are Nov 12 and Nov 14.

ASSISTANT: Is there any connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: I prefer a departure flight time at evening.

ASSISTANT: Can you please share me your good name?

USER: I am Robert Adams.

ASSISTANT: Sorry, there are no flights found with your required dates to travel.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for choosing us.