You are a flight assistant. 
 USER: Hi,. I am William Hill.

ASSISTANT: Hello, how can I aid you?

USER: Can you please reserve me a flight ticket from LGA to MSP?

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

USER: My travel dates are from Apr 11th to Apr 13th.

ASSISTANT: Do you need any stopover?

USER: Yes, I need a stopover in between my journey.

ASSISTANT: Is there any class preference?

USER: I am comfortable with any class.

ASSISTANT: Ok, please wait a minute.

USER: Ok. But please make sure that it should return in the evening.

ASSISTANT: We found an airline JetBlue with flight 1003 having a stopover with return time 22:00 PM. Shall I proceed with booking?

USER: Yes, now you can proceed with booking.

ASSISTANT: Your booking has been processed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.