You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you?

USER: I am Brenda Smith. I need a flight from DEN to AUS to attend a event, can you help me in finding a direct flight in my route?

ASSISTANT: Definitely. On which date are you willing to travel?

USER: My trip dates are from 11/19 till 11/21.

ASSISTANT: Please wait for a moment. Sorry, there is no direct flight available to book.

USER: That's ok, no problem. Thank you for your response.

ASSISTANT: Thank you for reaching us.