You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I be your helping hand today?

USER: I am Nicholas Martinez. I want to book a flight from MSP to LAX to meet my friend, can you please book a flight with fare 500?

ASSISTANT: When are you planning to make your journey?

USER: My trip dates are 02/22 to 02/24.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, we are sorry to inform you that, there is no flights with your respective dates of travel.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thank you for reaching us. Have a nice day.