You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Sandra Perez here.

ASSISTANT: Sandra Perez, I am glad you have contacted us.

USER: Can you please book me a flight from ORD to PHX?

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

USER: Sure, my planned trip dates are Nov 30th and Dec 2nd.

ASSISTANT: Please help me with your preferred depart and return time.

USER: My return time must be in the afternoon.

ASSISTANT: Do you need a direct or connecting flight?

USER: I need a direct flight.

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

USER: I am comfortable in any class.

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

USER: No.

ASSISTANT: Sandra Perez, I am sorry to inform you that there are no flights available that matches your needs.

USER: Ok, not a problem. Thanks for the information.

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