You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you now?

USER: I am Amy Lewis here, I would like to visit Atlanta, can you please help me to book a ticket?

ASSISTANT: Sure, I will help you with that. Can you please mention the travelling dates of your journey?

USER: Sure, my preferable dates of journey is from 08/30 to 09/01.

ASSISTANT: Ok, may I know the airport codes please?

USER: Please make sure that the price limit is 200.

ASSISTANT: Ok.

USER: My respective airports codes are from CLT to ATL.

ASSISTANT: Sorry Amy, there are no flights found on your requested dates.

USER: Ok, no problem. Thank you for your service.

ASSISTANT: Thank you for approaching us, have a nice day.