You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I assist you?

USER: I am Christine Turner. I would to book a plane reservation. I would like to book a plane reservation.

ASSISTANT: Sure, help me with your journey details?

USER: I need to travel from Washington DC-DCA to Charlotte NC-CLT.

ASSISTANT: Please provide me your journey dates?

USER: My depart on Feb/3 and return on Feb/5.

ASSISTANT: OK, please wait I will revert you in a  while.

USER: OK.

ASSISTANT: Thank you for waiting. Sorry, no flights are available on your requested dates.

USER: Thank you.

ASSISTANT: Thank you for reaching us, have a good day.