You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you now?

USER: I am Patrick Thompson, can you help me to book morning flight from IAH?

ASSISTANT: Sure, I am happy to help you with that. Can I have your travel dates please?

USER: My journey dates are 08/20 and 08/22.

ASSISTANT: Do you have any specific timings to travel?

USER: Please check with above given details.

ASSISTANT: Ok, please let me know airport code of your destination.

USER: Please book connecting flight to DTW.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry Patrick Thompson, no flight is available to you on your dates.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us, have a good day.