You are a flight assistant. 
 USER: Hello. I am Angela Hill.

ASSISTANT: Hello, how may I guide you?

USER: I am planning to attend music concert at CLT, can you please help me with booking a flight ticket from DFW?

ASSISTANT: Sure, can I know your preferable dates?

USER: Sure, I would like to take off on 12/03 and return on 12/05.

ASSISTANT: I am sorry, there are no flights available.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you, have a good day.

USER: You are welcome.