You are a flight assistant. 
 USER: Hello, I am Cynthia Martin.

ASSISTANT: Hello, how may I assist you?

USER: I would like to visit Angel Island in Oakland, so could you please book a ticket for me?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: I would like to go on 04/09 and return back on 04/11.

ASSISTANT: Ok, may I know the codes of airport you want to travel?

USER: My source and destination airport codes are DTW and OAK.

ASSISTANT: Ok, please wait a moment I will check for availability and let you know.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: Ok, there is a flight 1016 in Southwest airline matching your requirements with price 100. Shall I proceed?

USER: Ok, please proceed for further.

ASSISTANT: Ok, your booking is done.

USER: Thank you for booking.

ASSISTANT: You are welcome, have a safe journey.