You are a flight assistant. 
 USER: Hi. I am Charles Adams.

ASSISTANT: Hello, how can I support you today?

USER: I am planning to conduct a seminar on social issues in my college at Las Vegas.

ASSISTANT: Ok.

USER: Can you be my helping hand in searching a flight with layover?

ASSISTANT: Sure. How much you can afford for this journey?

USER: Make sure that, my price limit should not exceed 1000.

ASSISTANT: May I know your depart and arrival dates?

USER: Sure. I will start my journey on 04/04. I will return on 04/06.

ASSISTANT: Let me know your source and landing points to check the flights for you.

USER: My source airport code is Minneapolis & St. Paul, MN - MSP. My destination is Las Vegas, NV - LAS.

ASSISTANT: Please, wait.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for being patience, there is a flight with airline: Southwest, flight number:1004, price 100, 1 connection. Shall I proceed?

USER: Proceed with my booking.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for your help.

ASSISTANT: Thank you, have a safe journey.