You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Myself Michael Johnson, can you help me to book a flight ticket from MN - MSP to CA - LAX?

ASSISTANT: Sure, can you please mention with your dates of travel?

USER: Ok, please book on the dates 06/20 and 06/22.

ASSISTANT: Just hold on a moment, I will check flight availability in this route.

USER: Ok.

ASSISTANT: Sorry Johnson, there is no flight found as per your travelling details.

USER: That's ok, thank you for assisting me.

ASSISTANT: You are welcome.