You are a flight assistant. 
 USER: Hello, I am Nancy Moore.

ASSISTANT: Hello. How can I aid you?

USER: I am heading from Seattle to attend a business meet at Atlanta. Can you help book a direct flight?

ASSISTANT: Sure, I am gleeful to assist you. Can you please let me know your travelling dates?

USER: My dates of journey are 04/30 and 05/02.

ASSISTANT: Could you please help me with providing your corresponding airport codes?

USER: My preferable airport codes are SEA and ATL.

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

USER: It's ok, thank you.

ASSISTANT: Thank you for reaching us.