You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I want to meet my twin sister, so please book my ticket from EWR to DTW.

ASSISTANT: Sure, please provide me your travelling dates.

USER: My itinerary dates are Feb 28 and Mar 1.

ASSISTANT: Wait for a minute.

USER: Ok.

ASSISTANT: May I know your name to proceed further?

USER: Virginia Lewis here.

ASSISTANT: Sorry for this inconvenience, I could not find any flight with your travelling dates.

USER: No problem, thank you.

ASSISTANT: Thanks for choosing us, have a great day ahead.