You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Janet Wilson here. I want to travel from IAD to JFK with a single stop in my journey, can you please help me in booking a flight ticket?

ASSISTANT: Sure, I am glad to help you. May I know your travel dates?

USER: Sure, my trip dates are from 05/26 to 05/28.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for your patience. Sorry Janet, there is no flight available for your desired dates.

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

ASSISTANT: Thank you for reaching us. Have a great day.