You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How could I help you?

USER: My name is Rebecca Lopez. I want to attend my friend's marriage at Oakland, could you please help me with booking a flight ticket?

ASSISTANT: Sure, I can help you. What are your planning trip dates?

USER: My travelling dates are 06/21 and 06/23.

ASSISTANT: Can I know your airport codes?

USER: Source airport code is DTW and destination airport code is OAK.

ASSISTANT: Ok, I will search for flights and will revert you.

USER: Ok.

ASSISTANT: There is a flight 1002 with a fare of 200, is it suitable for your journey?

USER: Please proceed with the booking.

ASSISTANT: Rebecca, your ticket is confirmed, enjoy your journey.

USER: Thank you for the help.

ASSISTANT: Our pleasure to help you.