You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I'm Brandon Lee.

ASSISTANT: Yes.

USER: Could you help me to book a flight to CLT from PHL?

ASSISTANT: Sure, please tell your travelling dates?

USER: My journey dates are 08/29 to 08/31.

ASSISTANT: There are no flights available with your requested dates.

USER: That's ok. Thank you.

ASSISTANT: Thank you and have a nice day.