You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Samuel Moore, please book a ticket for me to Charlotte, CLT.

ASSISTANT: Sure, May I know your journey dates?

USER: My journey dates are from 06/04 to 06/06.

ASSISTANT: May I know your source code?

USER: My source location is Los Angeles, LAX.

ASSISTANT: Thank you for providing your journey details.

USER: Ok.

ASSISTANT: There is no flight found with your journey dates.

USER: It's ok. Thank you.

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