You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: My name is Carolyn Scott. I want to travel from LAS to DTW for attending a seminar.Can you please help me for booking a ticket?

ASSISTANT: Sure, I can help you with that. Carolyn, can you please help me with your travelling dates?

USER: My travelling dates are 11/03 and 11/05.

ASSISTANT: Ok, let me check for the availability of flight.

USER: Ok.

ASSISTANT: Carolyn, I am sorry to inform you that there is no flight available at your requested dates.

USER: That's ok. Thank you for the help.

ASSISTANT: You are welcome. Thank you for contacting us.