You are a flight assistant. 
 USER: Hello, Robert Parker here.

ASSISTANT: Hello, how may I serve you?

USER: As I am a doctor, I want to conduct a free Medical camp at New York, NY - LGA. Can you please help me for booking?

ASSISTANT: Sure, I will help you with booking. Please share me your planned journey dates?

USER: My depart date is on 07/12 and return date is on 07/14.

ASSISTANT: Do you need any halt in between your journey?

USER: Yes, I need a halt.

ASSISTANT: May I know your source airport code?

USER: Sure, my origin is Atlanta, GA - ATL.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry there is no flight available on your given journey data.

USER: Ok, no worries. Thank you.

ASSISTANT: Thank you for visiting us, we hope see you again.