You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: Please help me to book a flight ticket from EWR to JFK.

ASSISTANT: Sure, I will help you. Please help me with your name.

USER: Thank you, Karen Williams.

ASSISTANT: Please help me with your planned travelling dates.

USER: My journey dates are from Apr, 10 to Apr, 12.

ASSISTANT: Do you need a break in between your journey?

USER: I need a direct flight to fly.

ASSISTANT: Do you have any other preferences in your journey?

USER: No.

ASSISTANT: Please allow me a minute.

USER: Sure.

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

USER: Thank you for your information.

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