You are a flight assistant. 
 USER: Hello, I am Katherine Gonzalez.

ASSISTANT: Hello, How can I help you?

USER: I am planning to attend my friend birthday party in MI - DTW, can you please help me to book a flight ticket from AZ - PHX?

ASSISTANT: Sure, Please help me with your travel dates.

USER: My journey dates are 03/29 to 03/31.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for reaching us.