You are a flight assistant. 
 USER: Hello. I am Jennifer Perez.

ASSISTANT: Hello, how can I help you?

USER: I am a business man and I want to visit the TED conference, which was being held at Detroit. Can you help me out?

ASSISTANT: Sure, please provide me your journey details?

USER: The depart and arrival codes are: TX - IAH and MI - DTW. The journey dates are from 03/08 and 03/10.

ASSISTANT: OK, please wait for few minutes.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flights found with your requirement.

USER: Ok, thanks for the information.

ASSISTANT: Thank you.