You are a flight assistant. 
 USER: Hello, I am Barbara Baker.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me in booking a flight ticket from CA-LAX  to TX-IAH?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My travelling dates are from May 3 to May 5.

ASSISTANT: Do you have any requirements?

USER: I need a lay by in between journey.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say, there is no flight available for you.

USER: That's not a problem.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your information.