You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I be there for you?

USER: Please book a ticket from New York, NY-JFK to Las Vegas, NV-LAS.

ASSISTANT: Sure, when do you want to make your journey?

USER: Departure date is 12/01 and 12/03 will be return.

ASSISTANT: Do you need a lay by in between?

USER: Connections limit is 1.

ASSISTANT: May I know your name?

USER: I am Michelle Anderson.

ASSISTANT: Thanks for sharing your details. There are no flights available at this moment.

USER: Thank you.

ASSISTANT: Thank you for picking us.