You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you help me to reserve a flight ticket from PHX to AUS?

ASSISTANT: Please provide your journey dates.

USER: I would like to take off on 29 May and return on 31 May.

ASSISTANT: Do you need any specifications?

USER: I prefer to depart in the afternoon with a connecting flight.

ASSISTANT: May I know your name?

USER: I am Daniel Green.

ASSISTANT: There are no flights available on your routes.

USER: It's ok, not an issue, thank you.

ASSISTANT: Thank you for choosing us.