You are a flight assistant. 
 USER: Hello. I am Samuel Green.

ASSISTANT: Hello, how may I guide you?

USER: I am looking for a flight from LAS to LAX, can you help me out please?

ASSISTANT: Sure, can I know your preferable dates?

USER: My trip dates are from 01/25 till 01/27.

ASSISTANT: I am sorry, there are no flights available.

USER: That's ok, not an Issue.

ASSISTANT: Thank you, have a good day.

USER: Thank you for your information.