You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I have planned to visit a trip to Minneapolis MSP. Could you please help me  with booking a flight ticket from PHL?

ASSISTANT: Sure, can you please share your travel dates?

USER: I would like to start my journey on 12/21 and I want return back to my hometown on 11/23.

ASSISTANT: Please allow me a moment to check for the previous reservation.

USER: Ok, I will wait for your positive response.

ASSISTANT: May I know your name to proceed further?

USER: Myself Jeffrey Mitchell.

ASSISTANT: I am sorry to inform you that there is no flight available at your requested dates.

USER: Ok, no problem. Thank you for searching.

ASSISTANT: Thank you for contacting us, have a great day.