You are a flight assistant. 
 USER: Hi, I am Deborah Wilson.

ASSISTANT: Hello, how may I aid you today?

USER: I am planning to attend a Cultural event at Houston, can you please help me in reserving a ticket?

ASSISTANT: Sure, we are here to help you. May I know your travelling dates?

USER: My travelling dates are from 03/29 to 03/31.

ASSISTANT: Please provide your airport codes?

USER: My airport codes are from MI-DTW to TX-HOU.

ASSISTANT: Thank you for your details, there are no flights available by the given specified dates.

USER: Make sure that I want a direct flight. Ok, thank you.

ASSISTANT: Thank you for opting us.