You are a flight assistant. 
 USER: Hi. Gregory Smith here.

ASSISTANT:  Hello, how may I oblige you today?

USER: Can you help me with booking ticket from ATL to EWR, hope you are helping me with booking.

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: Ok, my planned dates are from Mar 19 to 21.

ASSISTANT: May I know your departure time and arrival time?

USER: Yes, I would like to departure in the afternoon with single connection.

ASSISTANT: There is no flight with your respective dates of travel.

USER: Not an issue, I will find an alternative. Thank you for checking.

ASSISTANT: Thank you.