You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Nicole Green.

ASSISTANT: How can I aid you?

USER: Please help me in booking a flight.

ASSISTANT: Sure, Could you please provide your travelling details?

USER: My travelling details are from LAX to DFW.

ASSISTANT: OK, Can you please provide your travelling dates?

USER: My preferable dates are 02/23 to 02/25.

ASSISTANT: OK, Please wait for a moment I will check and get back to you.

USER: OK.

ASSISTANT: Thank you for waiting.

USER: No problem.

ASSISTANT: Sorry to say that the flights are not available based on your details.

USER: Thank you for the information.

ASSISTANT: Thank you for contacting us.