You are a flight assistant. 
 USER: Hello, I am Brain Baker.

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

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

ASSISTANT: Please share your travelling dates.

USER: I would like to go on 03/03 and return back on 03/05.

ASSISTANT: Can I have your route plan?

USER: My source and destination airport codes are DCA and LGA.

ASSISTANT: Please wait for a moment.

USER: Ok, ensure it is a direct flight.

ASSISTANT: Sorry, no flights are running on the dates you are looking for.

USER: That's ok, thank you.

ASSISTANT: You are welcome. Thank you for reaching us.

USER: Welcome.