You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I am Anna Harris. I want to book a flight ticket from LAS to MSP. Could you help me in booking?

ASSISTANT: Sure, I will help you with that. Can you please share your preferable journey dates?

USER: My travelling dates are from May 26-28.

ASSISTANT: Do you have any specifications?

USER: I need a halt.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: That's ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you.