You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Melissa Green.

ASSISTANT: How can I serve you?

USER: Could you help me in booking a flight ticket from JFK to LGA?

ASSISTANT: Sure, We here to assist you. When would you like to travel?

USER: I want to fly on July 10, return on July 12.

ASSISTANT: Do you need any whistle stop?

USER: Yes, I need a flight with one connection.

ASSISTANT: Is there any other specifications?

USER: My return time should be afternoon.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: Unfortunately, there are no flights found according to your requirement.

USER: No problem, thank you.

ASSISTANT: Thank you for opting us.