You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER:  I would like to meet my sister in my weekend holidays, so can you please help me with flight ticket booking for my journey from LAX to SEA locations?

ASSISTANT: Ok, may I know your trip dates?

USER: My planned trip dates are from Feb 21 to Feb 23.

ASSISTANT: Do you have any requirements?

USER: I would like to Depart in the morning time.

ASSISTANT: May I know your good name to proceed further please?

USER: Sure, myself Williams Carter.

ASSISTANT: I am sorry to tell you, there are no flights available for your journey.

USER: That's ok, no problem.

ASSISTANT: Thank you for choosing us.

USER: Thank you for the information.

ASSISTANT: Have a nice day.