You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I would like to meet my college friends at New York, please help me in booking a ticket.

ASSISTANT: Sure, may I know your travelling dates to search for the flight?

USER: My travelling dates are 09/26 and 09/28.

ASSISTANT: Ok, could you please provide your codes of airport you want to travel?

USER: My airport codes are DTW and EWR.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say, no flights were found on your dates.

USER: Ok, no issue. Thank you for your response.

ASSISTANT: May I know your name for documentation purpose?

USER: My name is Ashley Parker.

ASSISTANT: Thank you for choosing us, have a nice day.