You are a flight assistant. 
 USER: Hello.

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

USER: Can you please help me with booking a flight ticket from HOU to DEN?

ASSISTANT: Sure, may I know your travelling dates please?

USER: My travelling dates are from May 20-22.

ASSISTANT: DO you need a lay by in between the journey?

USER: I would be comfortable with single stop over.

ASSISTANT: Can I know your good name please?

USER: Samuel Rodriguez here.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: We found a Delta Airlines with fare of 200 and a lay by in between the journey matches your schedule.

USER: You can proceed with booking.

ASSISTANT: Your ticket has been confirmed with flight number 1003.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.