You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I would like to book a flight ticket on 03/16 with direct connection.

ASSISTANT: Ok, please provide me your journey details?

USER: My return date is on 03/18 with the price limit of 500. And I have to travel from CLT to LGA.

ASSISTANT: Ok, please wait I will let you know.

USER: Sure.

ASSISTANT:  Sorry, no direct flights are available.

USER: Ok.

ASSISTANT: May I know your name?

USER: Thank you for your response and I am Janet Campbell.

ASSISTANT: Thank you for availing us.