You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you at this moment?

USER: Can you please reserve me a flight ticket from HOU to IAD?

ASSISTANT: Sure, do you need a lay by in between the journey?

USER: Yes, I need a lay by in between my journey.

ASSISTANT: On which dates would you like to travel?

USER: My trip dates are Feb 26 and Feb 28.

ASSISTANT: Ok, do you have any other preferences?

USER: I want to travel in business class  flight.

ASSISTANT: May I know your good name please?

USER: I am Betty Martinez.

ASSISTANT: There are no flights found on your requested dates.

USER: Ok,  no issues. Thank you.

ASSISTANT: Thank you for reaching us.