You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am planning to visit Philadelphia, can you please book me a ticket from DEN to PHL?

ASSISTANT: Yes, can you share me your dates of travel?

USER: My preferable journey dates are from 08/16 to 08/18.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates. Can I know your name?

USER: Ok, not an issue. My name is Daniel White.

ASSISTANT: Thank you for consulting us.

USER: Thank you for providing information.