You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Laura Green. I would like to make a trip to San Francisco this weekend, can you please find me a flight ticket from HOU to SFO?

ASSISTANT: Sure, I can help you.

USER: Thank you.

ASSISTANT: Can I know your travelling dates?

USER: My desired dates for this trip are from 09/05 to 09/27.

ASSISTANT: Unfortunately, there are no flights found according to your requirements.

USER: Ok, not an issue. I will find any alternate for this trip.

ASSISTANT: Thank you for choosing us.

USER: Thank you for providing information.