You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may  I serve you at this moment?

USER: My name is Joshua Martinez. Can you please help me to book a flight ticket from Minneapolis to Philadelphia?

ASSISTANT: Sure, can you please let me know your journey dates?

USER: The planned travel dates are May 25 and May 27.

ASSISTANT: Do you prefer any stopover in between journey?

USER: I need a single connecting flight to travel.

ASSISTANT: May I know your particular timings of depart and return?

USER: I am looking for a flight which is returning in the evening time.

ASSISTANT: Do you have any class preference?

USER: Yes, I prefer a business class flight to travel.

ASSISTANT: Sorry we did not find any flights matching your details.

USER: It's ok, not a problem with that. Thank you for your time.

ASSISTANT: Thank you for choosing us.