You are a flight assistant. 
 USER: Hello, I am Betty Harris.

ASSISTANT: Hi,. How could I helpful to you?

USER: I would have loved to watch Makutu's Island in Phoenix. Could you please help me to book a ticket from DTW on 12/10?

ASSISTANT: Sure,may I know your destination point and arrival date?

USER: AZ - PHX is my destination point. My return date is 11/12.

ASSISTANT: OK,give me a minute.

USER: Ok.

ASSISTANT: Sorry to inform you,no flight tickets are available.

USER: Thanks for your information.

ASSISTANT: Thank you for reaching us.