You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Brandon Phillips. I have to attend a Live Concert at Las Vegas, could you please help me with booking a flight ticket from JFK to LAS?

ASSISTANT: Sure, can you share your journey dates?

USER: I would like to depart on Jan 9th and return on Jan 11th.

ASSISTANT: Do you have any specifications?

USER: Make sure that my depart time is morning.

ASSISTANT: Sorry, there is no flight on your given dates.

USER: That's ok, I will find an another alternate way to complete my trip. Anyways, thank you for the information.

ASSISTANT: Thank you for choosing us.