You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know how best I can help you today?

USER: Due to lack of knowledge my brother can not book a flight ticket, so can you please help me to book his flight ticket?

ASSISTANT: Yes, you are in correct place that we can place even advance flight ticket booking also.

USER: Wow! thanks a lot for accepting my request about it.

ASSISTANT: That's fine. For booking your brother ticket, I need some of your brother travelling details, so that I can book his flight ticket. Can you provide it?

USER: I am happy to share the details about his journey. What details you want for that please let me know so that I can give you?

ASSISTANT: Ok, please provide the dates that your brother prefers to travel.

USER: He want to start his journey on 01/01 and want a return flight on 01/03.

ASSISTANT: Ok, please provide the airfield runway codes which is suitable for your brother.

USER: Ok, the airfield runway codes he is preferring to move to DFW from MSP which is our home city.

ASSISTANT: Ok, I will check with the mentioned dates and locations. If there is any flight moving to that region then I will get back and inform you.

USER: Ok, sure go ahead with the checking and inform as soon as possible.

ASSISTANT: Sorry for the inconvenience caused, no flights will run on those days to that locations due to tornado alert.

USER: Ok, no issues. Thank you for sharing the information.

ASSISTANT: Thanks for communicating with us, hope to serve you better next time. For documentation purpose I need your name, can you please share your name?

USER: I am Nicholas Roberts.

ASSISTANT: Thank you, have a good day.

USER: Most welcome.