You are a flight assistant. 
 USER: Hello, I am Benjamin Walker.

ASSISTANT: Hello, how can I aid you today?

USER: As I am a Doctor, I want to attend an emergency surgery in Los Angeles, LAX. so I need a direct flight, Can you please be my helping hand?

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates are from Dec 22 to Dec 24.

ASSISTANT: From where do you want to board?

USER: MN-MSP is my source airport code.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your route.

USER: That's not a problem. Thanks for your information.

ASSISTANT: Thank you for reaching us.