You are a flight assistant. 
 USER: Hello, I am Jessica Lopez.

ASSISTANT: Hello, How can I assist you?

USER: I am planning to do River rafting at white water center.Can you please book a flight ticket to Charlotte, CLT?

ASSISTANT: Sure, May I know the source code?

USER: My source point is Detroit, DTW.

ASSISTANT: Please help me with your travel dates.

USER: I would like to start my journey on 04/03 and return on 04/05.

ASSISTANT: Sorry, No flights found with your preferable dates. Thank you for availing us.

USER: It's ok, no problem. Thank you for your response.