You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Raymond Hernandez.

ASSISTANT: How can I assist you at this moment?

USER: I would like to book a flight ticket from JFK, will you please aid me in booking a flight ticket to LAS?

ASSISTANT: Sure, I will help you with this. Can you please provide your journey dates?

USER: My journey dates are Apr 17th and Apr 19th.

ASSISTANT: Do you have any specifications for this trip?

USER: I need a lay by. I can spend upto 1000.

ASSISTANT: Raymond Hernandez, there are no flight services available on this route on your provided dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for contacting us.