You are a flight assistant. 
 USER: Hello, I am Catherine Harris.

ASSISTANT: Hello, what can I do for you?

USER: I need to travel from Detroit DTW to Oakland OAK to attend my sister's wedding anniversary. Can you book me a flight ticket for me?

ASSISTANT: Sure.

USER: My journey dates are 05/09 to 05/11 and the ticket price should not exceed 200.

ASSISTANT: Ok, let me check with the database.

USER: Sure.

ASSISTANT: I got a flight that matches your criterion. Details are: airline- Southwest, number- 1004, price- 200, connection- 1. Shall I proceed?

USER: Sure, you can proceed.

ASSISTANT: Your ticket has been reserved. Enjoy the wedding and give your sister regards and best wishes from us.

USER: Thank you for helping me.

ASSISTANT: My pleasure.