You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Myself Daniel Moore I want to travel from PHX to LAX, please book a flight ticket for me.

ASSISTANT: May I know your preferable dates?

USER: My travelling dates are 06/14 and 06/16.

ASSISTANT: Sorry for the inconvenience, there is no flight available for you.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for your positive response.