You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Stephanie Carter.

ASSISTANT: Stephanie, how may I help you now?

USER: I have planned to attend family gathering in LAS.Can you please help me to book the flight ticket on 09/09?

ASSISTANT: Sure, I will help you with that. Can you please tell me the destination code and the arrival day?

USER: My origin airport code is SEA and I would like to return on 09/11.

ASSISTANT: Ok Stephanie, please wait for a moment.I will check the availability of the flight.

USER: Sure.

ASSISTANT: Thank you for waiting Stephanie, there are no flights found on your requirement.

USER: That's ok.

ASSISTANT: Thank you for approaching us, have a safe journey.

USER: Thank you for the help.

ASSISTANT: You are welcome.