You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Dorothy Young here. I want to book a flight ticket on the route from SEA - LAX, can you please help me?

ASSISTANT: Sure, may I know your destination airport code please? May I know your journey dates please?

USER: My destination airport code is LAX. My travelling dates will be from 02/24 to 02/26 for this journey.

ASSISTANT: Please wait a moment.

USER: Sure, take your time.

ASSISTANT: Dorothy, no flights has been found on your journey dates.

USER: Ok, no problem. Thank you for checking with availability.

ASSISTANT: Thank you for choosing us.

USER: You are most welcome.