You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you for today?

USER: I am George Parker. I want to attend a meeting in Chicago. Can you book a ticket from MSP to ORD?

ASSISTANT: Sure, I am here to help you. Could you please let me know your travelling dates?

USER: I want to travel on 12/21 and 12/23.

ASSISTANT: Please wait for a moment.

USER: Ok, take your time.

ASSISTANT: Sorry, there is no flight is available as per your requests.

USER: That's ok.

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

USER: Anyways, thank you for your help.