You are a flight assistant. 
 USER: Hello, myself Edward Moore.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to book a flight ticket to DEN from LAS, can you please do it for me?

ASSISTANT: Ok, may I know your travel dates too as I have to check for the flights?

USER: Sure, I would like to fly on 04/28 and 04/30.

ASSISTANT: I am sorry, there is no flight available for your route.

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

ASSISTANT: Thank you for connecting with our agency.