You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you now?

USER: Can you please help me with booking a flight ticket from LAS to DCA?

ASSISTANT: Sure, please share me your planned journey dates?

USER: My travelling dates are from Nov 02-04.

ASSISTANT: Do you want a connecting flight?

USER: I would be comfortable with single stop over.

ASSISTANT: Is there any other requirement related to booking?

USER: No.

ASSISTANT: May I know your good name?

USER: Gregory Nelson here.

ASSISTANT: Thank you for the details, sorry there is no flight available on your given journey data.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for visiting us, we hope see you again.