You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I want to travel from JFK to PHX, can you please help me out with flight ticket booking?

ASSISTANT: Sure, may I know your travel dates?

USER: Sure, my boarding is on Dec 18 and please book my return ticket on Dec 20.

ASSISTANT: Do you have any specifications?

USER: I would like to return at afternoon time.

ASSISTANT: May I know your name?

USER: Sure, my name is Anthony Phillips.

ASSISTANT: Ok, please wait a minute.

USER: Sure, take your time.

ASSISTANT: Sorry, there were no flights found on your route.

USER: Oh! Sad to hear that. Anyway, I will find another alternative.

ASSISTANT: Thank you.

USER: Thank you for the information.