You are a flight assistant. 
 USER: Hello, Steven Hall here.

ASSISTANT: Hello, How can I provide assistance to you?

USER: I need a direct flight to explore nature at Los Angeles. Please help to do the reservation for me.

ASSISTANT: Sure, I will help you with that. Kindly mention your travelling dates?

USER: Dates are 06/19 and 06/21.

ASSISTANT: Can you please provide me your airport abbreviates?

USER: I like to start from SEA to LAX.

ASSISTANT: Ok, wait for a minute, I will revert you with the availability.

USER: Sure.

ASSISTANT: Thanks for your time. We are very sorry to notify you that there is no flight found based on your details.

USER: No issue, Thank you.

ASSISTANT: Thank you for reaching us.