You are a flight assistant. 
 USER: Hi, I am Ryan Adams.

ASSISTANT: Hello. How can I assist you today?

USER: Could you please be my helping hand in booking a flight ticket from Charlotte, NC - CLT  to New York, NY - EWR?

ASSISTANT: Sure, can you please help me with the travel dates?

USER: My trip dates are 09/25 - 09/27.

ASSISTANT: Let me check for the availability of flight.

USER: Sure.

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

USER: Not an issue, I will choose alternate to reach my destination. Thank you for your information.

ASSISTANT: Thank you for contacting us.