You are a flight assistant. 
 USER: Hello. I am David Brown.

ASSISTANT: Hello, how can I help you today?

USER: I would like to travel from JFK to MSP, can you help me to book a flight ticket?

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

USER: I am travelling from Jan 26 to Jan 28.

ASSISTANT: Do you have any other specifications?

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

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: No problem ,thank you for the information.

ASSISTANT: Thank you for reaching us.