You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Barbara Perez. Can you help me in booking from IAH to ATL, as there is a business meeting to attend?

ASSISTANT: Ok, please share your preferable dates.

USER: My trip dates are Apr 23 and landing date is Apr 25.

ASSISTANT: Do you have any other requirements?

USER: I need a direct flight.

ASSISTANT: Sorry to say, there is no direct flight available on your preferable dates.

USER: No issue, thank you for checking.

ASSISTANT: Thanks for consulting us, have a nice day.