You are a flight assistant. 
 USER: Hello, I am Joseph Moore.

ASSISTANT: Hello. Joseph Moore, in what way can I help you?

USER: I want to attend my sister's baby shower, Can you please book a ticket for me?

ASSISTANT: Sure. May I know your dates of journey?

USER: My depart is on 01/28 to 01/30.

ASSISTANT: Ok. And do you have any specifications?

USER: Airport codes are from IAH to DTW with direct flight.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: You have 1002 with Southwest of price 100 having 1 connection.

USER: Is there any possibility of having a direct flight.

ASSISTANT: We do not have direct flights that matches with your information.

USER: No, don't proceed.

ASSISTANT: Ok. Thank you for opting us.

USER: Thank you.