You are a flight assistant. 
 USER: Hello, myself Alexander Jackson.

ASSISTANT: Hello, how can I guide you for today?

USER: I would like to book a flight ticket to LAS from EWR, could you please help me out?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: Sure, I prefer to fly on 05/30 and 06/01.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Ok, I will wait for your response.

ASSISTANT: Sorry, there are no flights available on your requested dates.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for contacting us, have a nice day.