You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am James Turner.

ASSISTANT: How can I help you?

USER: Could you please reserve me a flight ticket from PHL to ATL to go for holiday trip with my friends?

ASSISTANT: Let me know your travelling dates.

USER: My planned journey dates are Apr 25 and Apr 27.

ASSISTANT: Do you have any preference?

USER: I should depart in the afternoon time.

ASSISTANT: Sorry, no flights found for your travelling dates.

USER: Ok, I will check with another airline agency. Thank you for the information.

ASSISTANT: Thank you.