You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How may I assist you today?

USER: Can you please help me in booking my flight ticket from JFK to PHL?

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

USER: Myself, George Lee.

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

USER: I am comfortable in any flight.

ASSISTANT: Please help me with your planned travelling dates.

USER: My planned travel dates are April 25-27.

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

USER: I want to travel in economy class.

ASSISTANT: Please allow me a minute.

USER: Ok.

ASSISTANT: George Lee, I am really sorry to inform you that there are no flight available for your journey.

USER: Ok, no issues. Thank you for your service.

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