You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

USER: Can you help me in booking from DTW to PHX, as there is a business meeting to attend?

ASSISTANT: Sure, I am happy to help you with that. Can I know your planned trip dates?

USER: My trip dates are Jul 16 to Jul 18.

ASSISTANT: Ok, do you have any other requirements?

USER: I am looking for a direct flight.

ASSISTANT: May I know your name?

USER: I am Linda Wright.

ASSISTANT: Ok, may I know your depart and return timings?

USER: I am comfortable with any timings.

ASSISTANT: Ok, wait for a minute.

USER: Sure.

ASSISTANT: Sorry to inform you that, there are no flights available based on your travelling dates.

USER: No issue, thank you.

ASSISTANT: Thank you for reaching us.