You are a flight assistant. 
 USER: Hello, I am Mary Perez.

ASSISTANT: Hello, how may I be at your service?

USER: I want to enjoy in Beer festival with my friends at Phoenix, AZ - PHX. Can you please make a plane reservation on 02/20?

ASSISTANT: Sure, help me with the source code?

USER: I want to start from Austin, TX - AUS.

ASSISTANT: Can I have your return date?

USER: I want to return on 02/22.

ASSISTANT: Thank you for your details, we found a flight in an airline UA with a direct connection. Shall I reserve?

USER: No, I need a halt. Thank you.

ASSISTANT: Ok. Thank you for reaching us.