You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I provide service to you?

USER: I would like to buy a furniture in 16th street mall at Denver, CO - DEN for my newly constructed home. Will you help me to book a direct flight?

ASSISTANT: Sure, we are rapturous to help you. Can you please provide your take off airport code?

USER: My origin point is Dallas & Fort Worth, TX - DFW.

ASSISTANT: When are you planning to make your journey?

USER: My planned travel dates are 05/29 and 05/31.

ASSISTANT: May I know your name please?

USER: My name is Shirley Turner.

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

USER: Sure.

ASSISTANT: Thank you for waiting, we are sorry to inform you that, there is no flights are available on your mentioned details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.