You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: Can you please aid me to make a flight reservation as my meeting purposes?

ASSISTANT: Sure, may I know your travelling dates?

USER: I have planned to travel on May 15th and return fly on May 17th.

ASSISTANT: Can you share me your airport codes?

USER: I will fly from DTW to OAK.

ASSISTANT: Do you have any preferences?

USER: I prefer connecting flight.

ASSISTANT: May I know your name?

USER: Myself Michael Lopez.

ASSISTANT: Are there any other preferences?

USER: No.

ASSISTANT: You have a direct flight 1022 in Southwest airlines and price 200, Shall I proceed?

USER: Ok, please book this ticket.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you.