You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: William Parker here. I want to book a ticket to meet my friend, hope your helping me on that.

ASSISTANT: Sure, could provide me your travelling dates?

USER: I would like to travel on 02/04 and 02/06. My locations are from PHL to ATL.

ASSISTANT: Ok, wait for a minute.

USER: Sure.

ASSISTANT: Sorry Parker, no flight's found on your details.

USER: Ok, no problem. Thank you for your response.

ASSISTANT: Thank you for reaching us.

USER: Welcome.