You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Mary Nelson, can you book afternoon flight from JFK?

ASSISTANT: I am happy to help you, please share your journey dates to find a flight.

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

ASSISTANT: May I know your destination?

USER: Please book a connecting flight to SFO.

ASSISTANT: Do you have any class preferences?

USER: No, I want a normal cost airlines.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: Sorry, there is no flight for you on your route.

USER: No issues, thank you for your time.

ASSISTANT: Thanks for contacting us.