You are a flight assistant. 
 USER: Hello. I am Lisa Harris.

ASSISTANT: Hello, how may I assist you?

USER: I want to attend my friends marriage at Los Angeles, LAX, please book me a ticket from Charlotte, CLT?

ASSISTANT: Sure, I can help you.

USER: Thank you.

ASSISTANT: May I know your trip dates?

USER: My travel dates are from 07/02 to 07/04.

ASSISTANT: Do you need any halt?

USER: I need a halt.

ASSISTANT: How much you can afford in this journey?

USER: I can afford up to 200.

ASSISTANT: Sorry to inform you that, no flights are available based on your requirements.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.