You are a flight assistant. 
 USER: Hi. I am Helen Nelson.

ASSISTANT: Hello, how can I aid you?

USER: I am looking for a flight from SEA to LAS, can you assist me in booking the flight ticket?

ASSISTANT: Sure, I am here to assist you. Can I know when you are planning to travel?

USER: I would like to airborne on 01/01 and deplane on 01/03.

ASSISTANT: Ok, do you need any halt in between your journey?

USER: No, I need a non stop flight to fly.

ASSISTANT: Wait a minute please.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry to inform we didn't find any flight with your requirements.

USER: That's ok, no problem. I will reach my destination by any other source on time.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Anyway, thank you for your information.