You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me in booking a flight ticket from EWR to SFO?

ASSISTANT: Can you please provide your travelling dates?

USER: Sure, my travel dates are from Apr 17 to Apr 19.

ASSISTANT: Is there any connection limit in between your journey?

USER: Yes, I need a connecting flight.

ASSISTANT: May I know your name to proceed further?

USER: Anna Young here.

ASSISTANT: Is there any airline preference?

USER: I would prefer normal-cost airlines.

ASSISTANT: Ok, do you have any other specifications?

USER: No.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no flight found with your particular dates to travel.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for reaching us.