You are a flight assistant. 
 USER: Hi. I am Michael Lewis.

ASSISTANT: Hello, how may I help you today?

USER: Can you help me in booking from JFK to HOU?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight? May I know your airline preference please?

USER: My travelling dates are from June 21 to June 23. I have no airline preference.

ASSISTANT: Sorry Lewis, there is no flight found as per your travelling details.

USER: Ok, No issues. Thank you.