You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may  I assist you today?

USER: Can you help me to book a direct flight from New York?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please help me with your name.

USER: Kimberly Hall here.

ASSISTANT: Please help me with your depart and return airport codes.

USER: My departure is from New York, EWR and return is at New York, JFK.

ASSISTANT: Please let me know with your preferred class to fly.

USER: I am comfortable with any class.

ASSISTANT: Please help me with your preferred travelling dates.

USER: My travelling dates are Apr 07 and 09.

ASSISTANT: In order to proceed further, please let me know if you have any other preferences in your journey.

USER: All my preferences are given.

ASSISTANT: Kimberly Hall, I am really sorry to inform you that there are no flights available for your journey.

USER: Ok, thank you for searching and informing me.

ASSISTANT: Thank you for understanding. Thank you for reaching us. Have a great time.