You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you now?

USER: My name is Debra Wright. Can you book a flight ticket from ATL to LAS?

ASSISTANT: Sure, I will help you with that. Can I have your travel dates please?

USER: Ok, please book for the dates Sept 13 and 15 respectively.

ASSISTANT: Do you have any specific timings of your journey?

USER: Ok, please book a flight depart during evening.

ASSISTANT: Ok, please wait a moment.

USER: Ok, please check for a connecting flight in the mean while.

ASSISTANT: Sorry Debra Wright, no evening flight is available to you on your dates.

USER: That is ok, thank you for assisting me.

ASSISTANT: Thank you for choosing us, have a good day.