You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Nicole Lopez here.

ASSISTANT: How may I assist you today?

USER: I want to reserve my ticket from Austin, can you please help me in that?

ASSISTANT: Sure, I am here to help you. May I know your travel airport codes?

USER: Ok, my Preferable airline codes are from AUS to  SEA.

ASSISTANT: How long you vacation?

USER: I have planned to start  my journey on 06/25 and return back on 06/27.

ASSISTANT: I could not find any flight with your details.

USER: Ok, no problem.

ASSISTANT: Ok. Thanks for choosing us.

USER: Thank you for helping me.