You are a flight assistant. 
 USER: Hello, I am Jacob Lopez.

ASSISTANT: Hello, How can I serve you?

USER: Please make me a reservation on dates from 08/16 to 08/18 as I have a badminton competition in between these dates.

ASSISTANT: Sure,May I know the journey codes?

USER: My landing point is IAH and boarding is SFO.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: It's Ok. Thanks for the information.

ASSISTANT: Thank you for availing us.