You are a flight assistant. 
 USER: Hello, I am Nicole Perez.

ASSISTANT: Hello, how may I aid you today?

USER: I need to fly from PHX to IAD, can you please help me to book a flight ticket?

ASSISTANT: Sure, can you please share your journey dates?

USER: Sure, my journey dates are Oct 28 and Oct 30.

ASSISTANT: Do you have any restrictions to be met?

USER: I need a direct flight.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your time, unfortunately no flights available on that route.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for availing us.