You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Can you please help me in booking my flight ticket from ORD to IAD?

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

USER: My planned travel dates are Oct 02-04.

ASSISTANT: Do you have specific timings to travel?

USER: I want to depart in the afternoon.

ASSISTANT: Ok, please let me know the preferable connections too.

USER: I need a direct flight,.

ASSISTANT: Are you looking for any specific class?

USER: I need to fly in economy class.

ASSISTANT: Can I have your good name please?

USER: My name is Kenneth Hall.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry Kenneth Hall, no direct flight is available to you on your dates.

USER: Ok, no issues. Thanks for checking.

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