You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: My name is Rebecca Thompson and I want to book the flight ticket from SFO to EWR. Can you please help me?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: My travel dates are 02/26  and 02/28.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: Ok, thank you for the information.

ASSISTANT: You are welcome, have a great day.