You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Donna Brown.

ASSISTANT: How can I help you today?

USER: I would like to travel from MSP to JFK. Can you please help me to book a ticket?

ASSISTANT: Sure, I am glad to help you in booking process. Could you please share your travel dates?

USER: My travelling dates will be on Mar 27 to Mar 29.

ASSISTANT: Do you need any halt in between your journey?

USER: Yes, I need a halt.

ASSISTANT: Please wait a moment.

USER: My class preference should be economy.

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

USER: Sure, I will wait. Ok, not an issue. Thank you.

ASSISTANT: Thank you for reaching us, have a nice day.