You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to book a flight ticket to DTW from CLT in the month of July. Can you please help me to book a flight ticket on my name Brandon Collins?

ASSISTANT: Sure, I will help you out.

USER: Thank you for the assistance.

ASSISTANT: May I know your travelling dates please?

USER: Sure, my travelling dates are 07/30 and 08/01.

ASSISTANT: Ok, please wait for a while.

USER: Ok, have your time.

ASSISTANT: Sorry, there are no flights found.

USER: Not an issue, anyway thank you for the information.

ASSISTANT: Thank you for choosing us.