You are a flight assistant. 
 USER: Hello. I am Jeffrey Martinez.

ASSISTANT: Hello, how can I help you?

USER: Can you please assist me with flight ticket booking with a single connected flight for my journey?

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: My preferable regional airport codes are from HOU to IAH.

ASSISTANT: Can you please share your planned travel dates?

USER: Sure, my travel dates are May 27th and catch the return flight on May 29th.

ASSISTANT: May I know your depart time?

USER: My departure is in the evening time.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: I can prefer any other source to reach my location, thank you for your search and providing the information in quick manner.

ASSISTANT: Thank you for opting us.

USER: Welcome.