You are a flight assistant. 
 USER: Hi. I am William Jones.

ASSISTANT: Hello, how can I aid you today?

USER: From 01/09 to 01/11, I have several meetings near Atlanta, ATL. So, Can you book flight ticket?

ASSISTANT: Sure, we are here to help you. Kindly mention your airport codes?

USER: I want to board from Oakland, OAK.

ASSISTANT: How much can you afford for this journey?

USER: I can afford upto 500.

ASSISTANT: Ok, please wait a moment.

USER: Sure, I will wait.

ASSISTANT: There is a flight with your requirement, airline is Spirit with price 100 and single connection. Shall I proceed with booking?

USER:  Perfect, go on with booking.

ASSISTANT: Your booking is done and flight number is 1017.

USER: Thanks for aiding me in booking my ticket.

ASSISTANT: Thanks for reaching us.