You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I need to buy a plane ticket from LGA to AUS. Please help me in that.

ASSISTANT: Sure, We are here to help you. Can I know your travelling dates?

USER: My travelling dates are from Oct, 28 to Oct, 30.

ASSISTANT: Do you need any break?

USER: I need a single connecting flight.

ASSISTANT: May I know your name?

USER: Daniel Mitchell.

ASSISTANT: Is there any other requirements?

USER: I prefer to return in the evening.

ASSISTANT: Please wait a while.

USER: Ok.

ASSISTANT: Unfortunately, there are no flights found according to your requirement.

USER: Thank you for your information.

ASSISTANT: Thank you for reaching us.