You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: My name is Carolyn Hill, I am looking for a direct flight from DEN to ATL. Can you please search and book the flight ticket for me?

ASSISTANT: Sure, could you please mention with your dates of journey?

USER: I will depart on 06/03 and return on 06/05.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Hill, there is no flight found as per your travelling details.

USER: No problem, thank you for checking.

ASSISTANT: You are welcome.