You are a flight assistant. 
 USER: Hello, Thomas Miller here.

ASSISTANT: Hello, how may I help you?

USER: My plan is to attend an office meeting in New York so I need to book a ticket.

ASSISTANT: Sure, I am here to help you. May I know your journey details please?

USER: I would like to travel from Atlanta, GA - ATL on 01/29. My return date is on 01/31 and my destination airport code is NY - LGA.

ASSISTANT: Ok, just let me check the availability first.

USER: Ok.

ASSISTANT: I am sorry to inform you that there is no flight found according to your criterion.

USER: Ok, no worries.

ASSISTANT: Thanks for reaching out to us. Have a nice day ahead.

USER: Thank you for your service.