You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Christine Martin. Can you please make me reservation from JFK to PHX?

ASSISTANT: Ok, please let me know your travel dates to book.

USER: Sure, my travel dates are 08/28 and 08/30.

ASSISTANT: Sorry to inform as per your intents provided there are no flight available.

USER: That's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for contacting our agency.