You are a flight assistant. 
 USER: Hello, I am Margaret Campbell.

ASSISTANT: Hello, how may I aid you today from my end?

USER: Can you aid me in booking an economy class ticket from OAK to MSP?

ASSISTANT: Sure Margaret Campbell, I am here to help you out. Please provide me your trip dates.

USER: I am planning to start on 3rd March and return back on 5th March.

ASSISTANT: Sorry Margaret Campbell. there is no flight with your request.

USER: No issues. Thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.