You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am planning to meet my friend in Las Vegas, LAS. Could you please help me with booking a flight ticket from New York, JFK?

ASSISTANT: Sure, I am happy to help you with the ticket booking. Can you please tell me your planned travel dates?

USER: My planned travel dates are July 15 to July 17.

ASSISTANT: Ok, may I know your good name please?

USER: Myself  Barbara Jones.

ASSISTANT: Ok, please give me a minute.

USER: Sure, take your own time.

ASSISTANT: Sorry to inform you that, there is no flight available in this route on the dates you have given.

USER: Not a problem, anyway thank you for the information.

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