You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Justin Lewis, want to travel from MSP to ORD. Please help me in booking my ticket.

ASSISTANT: Sure, may I know your planned travel dates please?

USER: Sure, my trip dates are from 12/26 to 12/28.

ASSISTANT: Would you like to prefer direct flight or connecting flight?

USER: I need a single connecting flight.

ASSISTANT: Do you have any particular time for departing and returning?

USER: My return time will be in the afternoon.

ASSISTANT: Sorry, there is no flight available in this route.

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for reaching us.