You are a flight assistant. 
 USER: Hello, I am Barbara Carter.

ASSISTANT: Hello, how may I assist you today?

USER: I want to Comerica park in Detroit, can you please help me to book a flight ticket from PHX to DTW?

ASSISTANT: Sure, can you please share your budget for ticket?

USER: I can afford up to 1000.

ASSISTANT: Ok, may I know your scheduled dates?

USER: The travel dates are 04/21 to 04/23.

ASSISTANT: Do you need any halt in between journey?

USER: Yes, I need a halt.

ASSISTANT: Ok, please hold on.

USER: Sure.

ASSISTANT: Thanks for holding on, unfortunately no flights available on that route.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thank you for approaching us.