You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Can you help me in booking a flight ticket from MSP to LAX?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: I want to travel on 01/28, and return on 01/30.

ASSISTANT: Ok, please allow me a moment. Ok, could I have your name please?

USER: Make sure, I need to depart in the morning time and prefer for economy class. I am Donald White.

ASSISTANT: Sorry, there is no flight with your request.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: You are welcome, have a great day.