You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I serve you?

USER: My cousin is participating in Olympics so I want to attend the event in New York, NY - EWR. Can you help in booking my ticket?

ASSISTANT: Sure, I can help you to make your ticket, could you please provide me your travelling dates?

USER: Sure, My origin is from Washington, DC - IAD and my journey dates in the month June from 10 to 12.

ASSISTANT: Thank you providing your details, may I know your good name please?

USER: I am Betty Hill.

ASSISTANT: Thank you Betty Hill, give me a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, we are sorry to say that we found no flight on your details.

USER: Ok, No issue. Thank you for your service.

ASSISTANT: Thanks for choosing us, have a nice day.