You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Kevin Hernandez here. I need to reserve a ticket from PHL to MSP, can you help me in doing that?

ASSISTANT: Sure, I will help you to book a flight ticket. Can you please share me your travelling dates?

USER: My trip dates are Apr 04 to Apr 06.

ASSISTANT: Do you have any specifications?

USER: My depart time must be afternoon.

ASSISTANT: Sorry, no flights are available on your route.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Welcome, have a nice day. Thank you for choosing us.