You are a flight assistant. 
 USER: Hello, I am Jonathan Lewis.

ASSISTANT: Hello, how may I help you at this moment?

USER: I would like to visit the Statue of Liberty in New York, so could you please book a ticket for me?

ASSISTANT: Sure, I will help you. Please provide your travelling dates.

USER: Sure, I would like to go on 11/15 and return back on 11/17.

ASSISTANT: Can I have your airport codes?

USER: My source and destination airport codes are SEA and EWR.

ASSISTANT: Please wait for a while.

USER: Ok, ensure it is a direct flight.

ASSISTANT: Sorry, there is no direct flight available on your dates. You are welcome. Thank you for reaching us, have a nice day.

USER: That's ok, thank you for checking.