You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: Anthony Gonzalez here.

ASSISTANT: Nice to meet you Anthony Gonzalez.

USER: I would like to prefer a direct flight for my business trip to Los Angeles. Can you book the flight ticket?

ASSISTANT: Sure, when you are planning to travel?

USER: The trip dates are from July 27 to July 29.

ASSISTANT: May I know your specific airport codes?

USER: The airport codes are from MSP to LAX.

ASSISTANT: Please share me your other specifications if you have.

USER: That is it.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Not a problem. Thank you.

ASSISTANT: Thank you for availing us.