You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to attend conference in ATL, can you help me out?

ASSISTANT: Sure, may I know your dates of journey please?

USER: The trip dates are 11/11 and 11/13.

ASSISTANT: Where you want to travel from?

USER: Myself James Jackson from CO - DEN.

ASSISTANT: May I know your name please? Sorry James, I did not find any flight basing on your details.

USER: No problem. Thank you for checking.

ASSISTANT: You are welcome.