You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I need to meet my brother in JFK, can you help me in reserving a ticket from LAS?

ASSISTANT: Sure, I will help you. Please help me with your planned travelling dates.

USER: My journey dates are Jan 30 to Feb 01.

ASSISTANT: Please help me with your name.

USER: I am Jerry Williams.

ASSISTANT: Do you need a break in your journey?

USER: I need a direct flight.

ASSISTANT: Please help me with your preferred class to fly.

USER: I am ok with any class.

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

USER: No.

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

USER: Ok, no issues. Thank you for the information.

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