You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Please help me to book a flight ticket from OAK to SFO.

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

USER: Mar, 20 and Mar, 22 are my journey dates.

ASSISTANT: Please provide me the specifications.

USER: I need to depart at afternoon.

ASSISTANT: May I know the name?

USER: Sandra Allen here.

ASSISTANT: Do you have any specifications?

USER: I am looking for connecting flight.

ASSISTANT: Here, I found a flight with 1 connection and airfare is about 100. Shall I proceed with booking?

USER: Please proceed.

ASSISTANT: In an economy class, your ticket has been confirmed for the flight 1008 in Spirit Airlines.

USER: Thank you.

ASSISTANT: Thank you for reaching us.