You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I serve you?

USER: I am Paul Lee, would to go for Houston to meet my childhood friend. Can you book a flight on 06/24?

ASSISTANT: Sure, May I know the journey codes?

USER: Sure. Houston, IAH is my landing point. I would like to start from Detroit, DTW.

ASSISTANT: Please help me with your return date.

USER: I supposed to come on 06/26.

ASSISTANT: We have found a direct flight from Southwest airline. Shall I proceed?

USER: No, I need a connecting flight. Thanks for your service.

ASSISTANT: Ok. Thank you for reaching us.