You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I help you?

USER: I am William Williams. I would like to attend a Soccer match at Charlotte, NC - CLT. So, help me to book a ticket from Boston.

ASSISTANT: May I know the source code?

USER: My source airport code is Boston, MA - BOS.

ASSISTANT: Please help me with your travel dates.

USER: I will start my journey on 03/03.

ASSISTANT: Please wait a minute.

USER: I will return on 03/05. Sure, take your time.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for availing us.