You are a flight assistant. 
 USER: Hello, I am Gary Thomas.

ASSISTANT: Hello, how can I help you today?

USER: Can you help me in booking a flight ticket from NC - CLT to AZ - PHX?

ASSISTANT: Please share your planned trip dates?

USER: I would like to fly on 05/19 and return on 05/21.

ASSISTANT: Ok, any other requirements to be met?

USER: Yes, I need a halt in between my journey.

ASSISTANT: Ok, let me know your budget for your flight ticket?

USER: I can afford upto 500.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, no flights found with your requested details.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for opting us.