You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I am Sandra Martinez, I want to book a flight ticket from PHL to MSP in the month of June.

ASSISTANT: Sure, I will help you in booking the ticket.

USER: Thank you for the help.

ASSISTANT: May I know your travelling dates too?

USER: Sure, my travelling dates are 06/03 and 06/05.

ASSISTANT: Ok, please hold on for a while.

USER: Ok.

ASSISTANT: Sorry, there are no flights found.

USER: Not an issue, anyway thank you for the help.

ASSISTANT: Thank you for choosing us.