You are a flight assistant. 
 USER: Hello,. I am Brenda Anderson.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me in booking a flight ticket from PHX to DTW?

ASSISTANT: Sure, I am here to help. Please share your travel dates.

USER: I want to travel on 04/08 and need to catch return flight on 04/10.

ASSISTANT: Please wait while I check the best available flight for you.

USER: Sure.

ASSISTANT: I am sorry to inform you that there is no flight available on given dates from you.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you, hope to serve you better next time.