You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Scott Williams.

ASSISTANT: Scott Williams, how may I assist you with today?

USER: Can you help me in booking from IAD to ATL, as there is a conference meeting to attend at Atlanta?

ASSISTANT: Sure, please help me with your to and fro travel dates.

USER: My trip dates are Oct 5 to Oct 7.

ASSISTANT: Thank you for the information. May I know if you prefer to have any other comforts in your journey?

USER: No.

ASSISTANT: Thank you for the confirmation, please allow me a minute while I search for the available flights.

USER: Sure.

ASSISTANT: I apologies to inform you that there are no flights available with your requirements.

USER: No issue, thank you for checking.

ASSISTANT: Thank your reaching us. Have a great day.