You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Kimberly Campbell. Please book a flight ticket to DTW from IAH.

ASSISTANT: Sure, may I know your planned travel dates?

USER: I have planned to travel on 7th May and return on 9th May.

ASSISTANT: Do you have any specifications?

USER: Please book a flight ticket with a connecting flight, the return time is morning.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Sorry, there are no flights available for your desired intent.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for reaching us.