You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: My name is Jerry Brown, I want to book a flight from New York to Houston. Can you book my departure and return flight in afternoon?

ASSISTANT: Please share your trip dates.

USER: I will travel on Dec 2nd and return on Dec 4th.

ASSISTANT: Do you need any halt in between the journey?

USER: Yes, I need a halt.

ASSISTANT: May I know your airport codes?

USER: I need flight from JFK to HOU.

ASSISTANT: If you need any other requirements please share me.

USER: No, I do not have any other requirement.

ASSISTANT: Ok, please wait a second.

USER: Sure.

ASSISTANT: Sorry to inform you, there are no available flights on your journey routes.

USER: Thank you for the information.

ASSISTANT: Thank you for choosing us.