You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Ronald Lewis here. Can you please help me in booking a flight ticket from DTW to IAD?

ASSISTANT: Please can I know the dates you prefer to make this journey on?

USER: Sure, my travel dates are from Jan 06 to Jan 08.

ASSISTANT: Please wait a moment while I check for a flight to book a ticket.

USER: Ok, take your time.

ASSISTANT: There is no flight available at your preferred journey location to book, sorry for the inconveniences.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for choosing our agency and providing your concern.