You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I am Samantha Turner. I want to book a ticket from JFK to IAH, can you please help me?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My travelling dates are on Dec 08 and Dec 10.

ASSISTANT: Do you need any specifications?

USER: I want to return at evening time.

ASSISTANT: Can I know your preferences?

USER: I need a single connection.

ASSISTANT: Sorry, there are no flights found.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for reaching us.