You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I am planning a trip to Phoenix, can you please book me a ticket from ATL to PHX?

ASSISTANT: I am happy to help you with that. May I know your preferable dates to proceed further?

USER: My preferable journey dates are from 06/19 to 06/21.

ASSISTANT: May I know your name please?

USER: My name is Kimberly Young.

ASSISTANT: Wait for a moment, I will get back with your flight details.

USER: Sure.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: Ok, not an issue. I will find any alternate for this trip. Thank you for providing information.

ASSISTANT: Thank you for contacting us.