You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: Myself Nicholas Lee. I want to travel from HOU IAH locations, can you please help me in booking a flight ticket?

ASSISTANT: I will help you with that, can you please share your journey dates?

USER: My travelling dates are from 08/15 and 08/17.

ASSISTANT: I am sorry to say that there is no flight found.

USER: It's ok. Thank you for the information.