You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Please help me in booking flight ticket from LAS to AUS.

ASSISTANT: Sure, please provide your travelling dates.

USER: My trip dates are Jan 16 to Jan 18.

ASSISTANT: Ok, Do you have any class preference?

USER: No.

ASSISTANT: Ok, May I know your connection limit?

USER: I prefer to travel in connecting flight.

ASSISTANT: Ok, Is there any other preferences?

USER: Make sure my return should be in the evening.

ASSISTANT: Ok, May I know your name?

USER: Amy Baker.

ASSISTANT: Thank you for providing details, please wait.

USER: Ok.

ASSISTANT: Thank you for your time, There were no flights found with your given details.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: Thank you for choosing us.