You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: Can you please help me in booking from DFW to MSP?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My travelling dates are from Oct 30 to Nov 1.

ASSISTANT: Do you have any preferences about class?

USER: I need a direct flight.

ASSISTANT: Do you have any preferences about airline cost?

USER: No.

ASSISTANT: Please mention your name.

USER: My name is Timothy Lee.

ASSISTANT: There is no flights found under your preferable details.

USER: Ok, No issues, thank you.

ASSISTANT: Welcome, have a great day.