You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I have to go to Charlotte, because my sister blessed with a baby boy. Can you book a ticket for me?

ASSISTANT: That's great to hear. I am happy to help you with booking. Can you please provide me your travel dates?

USER: My location codes are from PHX to CLT. My dates are from 11/12 till 11/14.

ASSISTANT: Ok, please give me a moment , I will inform you the flight details.

USER: Ok.

ASSISTANT: Thank you for waiting. May I know your good name for verification?

USER: Sandra Jackson.

ASSISTANT: Sorry Jackson, there is no flight free on your travel dates.

USER: That's ok.

ASSISTANT: Thank you for reaching us.

USER: Thank you.