You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you?

USER: I am Steven Hall here, I want to reserve my ticket from DTW to ORD, can you please help me?

ASSISTANT: Sure, help me with the trip dates?

USER: Sure, my planned dates of journey are from May, 29 to May, 31.

ASSISTANT: Do you have any preferences?

USER: Yes, I need a return time at morning.

ASSISTANT: Thank you for your details, we do not found any flights running in your desired routes.

USER: Ok, no problem. I will try with the another booking agency. Thank you for your service.

ASSISTANT: Thank you for reaching us.