You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you toady from my end?

USER: Can you find a flight for me from DEN to LAX, to meet my brother on his birthday.

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: Ok, my journey dates are from Oct 13 to 15.

ASSISTANT: May I know your name to proceed further?

USER: Sure, I am Steven Green.

ASSISTANT: Which class do you prefer to travel?

USER: I don't have any class preferences, I need a flight in normal cost.

ASSISTANT: Steven Green, please allow me a moment.

USER: I would like to departure in the afternoon time with single connection.

ASSISTANT: Sorry Steven Green, there is no flight in your route as per your requirement.

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for reaching us.