You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. May I know your name please?

USER: Mary Hill here.

ASSISTANT: Mary, how can I help you?

USER: On a business meet, I want to travel to Phoenix PHX on 01/14, could you reserve a flight ticket?

ASSISTANT: Sure, I will help you. May I know the destination code and the arrival day?

USER: My source code is MCO and my arrival dates is on 01/16. And make sure that fare is 500 and limit must be 1.

ASSISTANT: Sorry, there are no flights found on your requirements. Thank you for approaching us, have a nice day.

USER: Ok, no problem, thank for your information.

ASSISTANT: You are welcome.