You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you at this moment?

USER: I am Jennifer White. I want to book a flight from SFO to reach ATL to meet my high school friends. Can you book a direct flight for me?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I have planned to travel on Dec 29th and return on Dec 31st.

ASSISTANT: Do you have a class preference?

USER: I am ok with any class.

ASSISTANT: Do you have any other requirements?

USER: Yes, I have planned to depart in afternoon.

ASSISTANT: Ok, please wait for couple of minutes.

USER: Ok, I will wait.

ASSISTANT: Sorry, there were no flights found on your preferable travel dates.

USER: Ok, no problem. Thank you for your kind help.

ASSISTANT: Thank you for contacting us.