You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I be your guide for today?

USER: I am Edward Parker, can you help me to book a flight from CLT within price 500?

ASSISTANT: I am here to help you in booking your flight ticket. Can you please provide your planned dates of journey?

USER: My travelling dates are 07/31 and 08/02.

ASSISTANT: Edward Parker, could you please provide your destination code of journey?

USER: My destination airport code is DTW.

ASSISTANT: Do you have any preference about the class for your journey?

USER: No.

ASSISTANT: We regret to inform you that there are no flights moving to your region with your planned dates of travelling.

USER: No issues, thank you for your help in searching.

ASSISTANT: You are welcome, thank you for reaching us. Hope you have a nice day ahead Edward Parker.