You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: My name is Charles Jones, I want to book a economy class flight ticket to visit St. Paul for vacation. Can you book a flight for me?

ASSISTANT: Sure, could you please share your airport codes?

USER: My source point is EWR and my destination is MSP.

ASSISTANT: On what dates are you planning to travel?

USER: I will travel on July 24 and return on July 26.

ASSISTANT: Do you need a stop over?

USER: Yes, I need a halt.

ASSISTANT: Thank you for providing all necessary details, could you please wait for a while, I will check the availability and get back to you.

USER: Sure, please find my departure flight in afternoon.

ASSISTANT: Ok. Thank you for waiting, I regret to inform you that there are no flights obtained on your journey dates to book a flight ticket.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.