You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Please help me to book a flight ticket from LAX to MSP.

ASSISTANT: Sure, I am  happy to help you with that.  Can I have your travel dates please?

USER: I want to travel in Aug from 28th to 30th.

ASSISTANT: Ok, please let me know the timings of your journey.

USER: I am fine with any timings.

ASSISTANT: Do you prefer any specific class to travel?

USER: Any class is comfortable with me.

ASSISTANT: Are you looking for any connecting flight or direct flight only you want?

USER: I prefer to travel on a connecting flight.

ASSISTANT: Can I have your good name please?

USER: Karen Perez here.

ASSISTANT: Sorry to inform you that no flight is available to you on your dates.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you  for choosing us, have a good day.