You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I want to meet my sister on her birthday, can you please help me to book my flight ticket from PHX to ATL?

ASSISTANT: May I know on which dates you are willing to travel?

USER: Yes, I would like to depart on May 14th and return back on May 16th.

ASSISTANT: Do you require any stopovers in your journey?

USER: Yes, I prefer for a single connection flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Sorry to inform you that unfortunately there is no flights available by the given details.

USER: No problem. Anyway, thank you for checking.

ASSISTANT: May I know your name?

USER: My name is Emma Brown.

ASSISTANT: Thank you.