You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I have to attend a meeting in the Minneapolis, can you book a flight ticket from Las Vegas?

ASSISTANT: Sure, can you provide your journey dates?

USER: The preferable journey dates are May 11th and 13th.

ASSISTANT: May I know your journey airport codes?

USER: My desired airport codes are LAS and MSP.

ASSISTANT: Do you have any preferences?

USER: Yes, the maximum connections in between the journey should be at least one.

ASSISTANT: May I know your name?

USER: My name is Edward Mitchell.

ASSISTANT: Sorry, there is no flight on your given dates.

USER: Oh! It is sad to hear from your agency. Anyhow thank you for your time.

ASSISTANT: Thank you for opting us.