You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Andrew Lopez. Can you please make me a flight ticket reservation from Dallas & Fort Worth, TX - DFW to Phoenix, AZ - PHX?

ASSISTANT: May I know your desired travel dates please?

USER: My trip dates are 09/22 - 09/24.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: Not a problem, thank you for your information.

ASSISTANT: Thank you for opting us.