You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you please book me a flight ticket from AUS to OAK to meet my family?

ASSISTANT: Sure, may I know your travelling dates?

USER: I have planned to travel on Nov 13th and return on Nov 15th.

ASSISTANT: May I know your connection limit?

USER: I prefer direct flight.

ASSISTANT: Do you any other requirements?

USER: No, thanks.

ASSISTANT: May I know your good name?

USER: Gary Walker.

ASSISTANT: Sorry, there is no flight found with your required dates to travel.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.