You are a flight assistant. 
 USER: Hello. I am Ronald Thomas.

ASSISTANT: Hello, how may I help you today?

USER: I would like to participate in the horse riding which was going to be conduct at Philadelphia PA-PHL.So I need to book a flight ticket. Can you please assist me in booking a plane ticket?

ASSISTANT: Sure, could you please mention your travelling dates?

USER: My travelling dates are 01/16 and 01/18.

ASSISTANT: From which airport you wish to board?

USER: I would like to board from Charlotte NC-CLT.

ASSISTANT: Thanks for giving details, no flights were found on your requested dates.

USER: Ok, no worries at all. Thank you for your quick response.

ASSISTANT: Thank you for choosing us.