You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: I am Melissa Moore, want to travel from JFK to LAS. Please help me in booking my ticket.

ASSISTANT: Sure, we are mirthful to help you.

USER: Thank you.

ASSISTANT: May I know your planned travel dates?

USER: Sure, my planned travelling dates are from 11/23 to 11/25.

ASSISTANT: Do you prefer either connecting flight or direct flight?

USER: Sure, I need a connecting flight.

ASSISTANT: Thank you for providing your details, please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, there were no flights found from JFK to reach LAS.

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for availing us.