You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Myself Samuel Davis.

ASSISTANT: Nice to meet you Samuel Davis.

USER: I'm planning to visit ATL from DEN on a business trip, can you help me out in booking a ticket?

ASSISTANT: Sure,Can you please provide your trip dates?

USER: I'm planning it on 05/22 to 05/24.

ASSISTANT: Sure wait a moment,I will inform you.

USER: OK.

ASSISTANT: Sorry Samuel Davis, there is no flights found as per your requested dates.

USER: It's fine, thank you for your immediate response.

ASSISTANT: Your welcome Samuel Davis.