You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Can you help me to book a flight ticket from JFK to LAX?

ASSISTANT: When you are willing to travel?

USER: Jan, 16 and Jan, 18 are my travelling dates.

ASSISTANT: Do you have any connection limit?

USER: I would prefer single connection.

ASSISTANT: Do you have any other requirement?

USER: I need to depart at evening time with normal cost airline service only.

ASSISTANT: May, I know your good name?

USER: Ronald Thomas here.

ASSISTANT: Do you have any other specifications?

USER: No, thank you.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: That's ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for reaching us.