You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I assist you?

USER: I would like to meet my client at Atlanta. Can you please book my flight ticket from OAK to ATL?

ASSISTANT: Sure, May I know the travelling dates?

USER: Thank you. I will depart on Apr 6th and return back in the afternoon on Apr 8th.

ASSISTANT: Do you have any connection limit?

USER: I only need a flight having single connection.

ASSISTANT: Is there any other requirements?

USER: No.

ASSISTANT: May I know your name?

USER: Myself Daniel Smith.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Sad to hear that. Anyway, thank you for checking.

ASSISTANT: Thank you for opting us.