You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I am Robert Harris. I have planned for the trip to Los Angeles. Can you please check the flight availability from Seattle?

ASSISTANT: Sure, I will help you with booking.

USER: Thank you for accepting my request.

ASSISTANT: Please share me your airport codes?

USER: The source and destination airport codes are SEA and LAX.

ASSISTANT: May I know on which dates you are travelling?

USER: I am willing to travel on the dates of July 30 and Aug 01.

ASSISTANT: Do you want any connection in between your flight journey?

USER: Yes, I prefer to travel in the direct flight.

ASSISTANT: Thank you for the details, please wait for a moment.

USER: Ok, I want a economy class flight. So, please search for that.

ASSISTANT: Thank you for waiting, sorry there is no flight found on your given journey data.

USER: It's ok, thank you for searching the flight.

ASSISTANT: Thank you for visiting us, we hope see you again.

USER: You are welcome.