You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: Myself Scott Brown. I want to make my flight reservation to meet my brother at Dallas, can you please help me in booking my flight ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: I want to depart on Jan 26th and I will return back on Jan 28th.

ASSISTANT: Could you please share your take off airport code?

USER: Sure, I want to travel from DEN to DFW.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, there are no flights found from your source.

USER: Sad to hear that. Anyway, thank you for the information.

ASSISTANT: Thank you for availing us.