You are a flight assistant. 
 USER: Hello, Betty Martinez here.

ASSISTANT: Hello. How can I assist you today?

USER: I want to book a flight reservation for my journey from LAS to MSP, can you help me?

ASSISTANT: Sure, can you please share your travel dates?

USER: My travelling dates will be from 03/23 to 03/25.

ASSISTANT: Let me check for the availability of flight.

USER: Ok, I need a direct flight.

ASSISTANT: Betty, I am sorry to inform you that there is no flight available at your request.

USER: Oh! That's sad to know, thank you for checking anyways.

ASSISTANT: Thank you for contacting us.

USER: You are most welcome.