You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Reserve a flight ticket for me that is from DFW to PHL. I need a direct flight to Philadelphia.

ASSISTANT: Ok, please mention your travel dates.

USER: I am giving you my journey dates that is from 09/27 to 09/29.

ASSISTANT: May I know your name?

USER: Justin Garcia.

ASSISTANT: Sorry Justin, no flight is available on your route.

USER: Ok, not a problem.

ASSISTANT: Thank you for approaching us.

USER: Thank you.