You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: My name is Cynthia Green. I just need your help in booking a plane ticket to MSP on 07/09.

ASSISTANT: Sure, can I know your source airport code?

USER: Sure, my source airport code is PHX. My return date is 07/11.

ASSISTANT: Ok, could you please let me know the return date?

USER: My return date is 07/11.

ASSISTANT: All flights are booked already, would you like to move on any other date?

USER: No, thank you.

ASSISTANT: Ok, thank you for reaching us.