You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Can you reserve a seat for me on a flight with my name Robert Wright?

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

USER: Thank you, my preferable dates are from 08/10 and 08/12.

ASSISTANT: May I know your airport codes?

USER: Sure, my locations are from LAS to MSP.

ASSISTANT: Sorry, there is no flight is available for you.

USER: It's ok, thanks for checking.

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