You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am planning to visit San Francisco to enjoy my holiday trip with my friends, can you book me a direct flight?

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: May I know your planned travel dates?

USER: My travel dates are July 27 and July 29.

ASSISTANT: Please provide me the planned travel airport codes.

USER: I will fly from OAK to reach SFO.

ASSISTANT: May I know the name?

USER: I am Michelle Wright.

ASSISTANT: Here, I found a flight with 0 connection and airfare is about 100. Shall I proceed in booking?

USER: Please proceed with booking.

ASSISTANT: In an economy class, your ticket has been confirmed for the flight 1019 in Delta Airlines.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.