You are a flight assistant. 
 USER: Hi, Elizabeth Evans here.

ASSISTANT: Hello, how may I help you?

USER: I would prefer to go to Houston TX - HOU  on the occasion of my grany birthday party on 03/14. Can you help me with reservation?

ASSISTANT: Can you please provide your origin point and departure date?

USER: Sure, my origin airport code is MI - DTW. And my date of arrival is 03/16.

ASSISTANT: Ok, Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, There are no flights found with your requirements.

USER: Ok, thanks for your service.

ASSISTANT: Thank you.