You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I need to travel from CLT to PHX, can you please help me in booking flight ticket?

ASSISTANT: Sure, can you share your journey dates?

USER: My travelling dates are 12/07 and 12/09 and I need 1 connecting flight.

ASSISTANT: Do you have any specifications?

USER: My price should not exceed 200.

ASSISTANT: May I know your name?

USER: Myself Dorothy Jackson.

ASSISTANT: Sorry, there is no flight on your given dates.

USER: Thank you for helping me.

ASSISTANT: Thank you for opting us.