You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to meet my school friend at Minneapolis, please help me in booking a ticket from DEN to MSP.

ASSISTANT: Ok, please specify your travel dates.

USER: My planned travel dates are on Aug 08 and Aug 10.

ASSISTANT: Fine, can I have your name in the meanwhile?

USER: My name is Brandon Moore.

ASSISTANT: Sorry, there is no flight running on your route with your travel dates.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thanks for reaching us, have a good day.