You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you?

USER: Jeffery Gonzalez here. I need to travel from HOU to SFO, can you please help me in doing that?

ASSISTANT: Sure, help me with the trip dates?

USER: My trip dates are 09/24 to 09/26.

ASSISTANT: Do you have any other preferences?

USER: I need a direct flight.

ASSISTANT: Sorry, we did not find any flights running in your desired routes.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for availing us.