You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I am planning to book a flight ticket to JFK from MSP, can you please help me out?

ASSISTANT: Sure, may I know your trip dates?

USER: Sure, my trip dates are Dec 25 and Dec 27.

ASSISTANT: Do you have any specifications?

USER: My return time must be in evening.

ASSISTANT: Please mention your good name.

USER: My name is Carolyn Miller.

ASSISTANT: There are no flights found on your specified travel dates.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for reaching us.