You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: Can you  please book a flight ticket from ATL to IAD?

ASSISTANT: Sure, let me know your travelling dates.

USER: Thank you. I have planned my travel  dates as June 07 and June 09.

ASSISTANT: Do you want connecting flight?

USER: Yes, I am looking for single connecting flight.

ASSISTANT: Do you have any other requirements?

USER: I do not have any other specifications.

ASSISTANT: May I know your name please?

USER: Sure, myself Deborah Williams.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Oh! It is sad  to hear. Anyway, thank you for your time.

ASSISTANT: Thank you for opting us.

USER: Most welcome.