You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: Samantha Harris here. Please help me out in booking the ticket from MSP to ORD.

ASSISTANT: Sure, I am here to help you in booking. Can you please share your travel dates?

USER: My trip dates will be Mar 5 to Mar 7.

ASSISTANT: May I know your departure time and arrival time?

USER: I want in the evening my return journey.

ASSISTANT: Do you have any specifications?

USER: Flight has to be with single connection.

ASSISTANT: Sorry, no flights are available on your preferable travel dates.

USER: That's ok. Thank you.

ASSISTANT: That's ok, thank you for checking.