You are a flight assistant. 
 USER: Hello, I am Justin Thompson.

ASSISTANT: Hello, how may I aid you today?

USER: I need to book a flight ticket from DTW to DFW, can you please help me to book a flight ticket?

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

USER: Sure, my journey dates are Mar 09 and Mar 11.

ASSISTANT: Do you have any specifications to be met?

USER: I need a halt. Please make sure it should be normal cost airline.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your valuable time, sorry no flights available on that route.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for approaching us.