You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Cynthia Young.

ASSISTANT: How can I assist you for the day?

USER: I am planning to visit Charlotte, CLT to meet my grand parents. Can you please book me a ticket from Chicago, ORD?

ASSISTANT: Sure, I will help you with that.  Can you please mention your travel dates, please?

USER: My planned dates of journey are from 02/03 to 02/05.

ASSISTANT: Sorry to say that. there are no flight's available on your route as per your requirement's.

USER: Ok, not an issue. I will find any alternate for this trip. Thank you for providing information.

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