You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, Good Evening.

USER: My name is Catherine Harris.

ASSISTANT: Catherine, what kind of help are you expecting from my side?

USER: I heard Angel Island is famous for camping and trekking, so all of my friends planned to visit that place for our vacation.

ASSISTANT: That's great to hear.

USER: Could you help me out?

ASSISTANT: Sure, would you please let me know the airport codes?

USER: My source code is ORD and my destination code is OAK.

ASSISTANT: Ok Catherine, could you please tell me on which dates you are interested to travel?

USER: I would like to travel from 05/09 to 05/11.

ASSISTANT: Ok, please hold on for a moment and I will get back to you with the available flight details.

USER: Sure, take your time.

ASSISTANT: Yes, the Southwest airlines is providing a service on the route from ORD to OAK on your requested dates, shall I proceed with the booking?

USER: Please proceed with the booking.

ASSISTANT: Ok, your ticket has been booked successfully with the flight 1011.

USER: Thank you for helping me out.

ASSISTANT: Thank you, hope you enjoy your trip.