You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Laura Young.

ASSISTANT: How can I assist you at this moment?

USER: I want to travel from LAS to IAD. Can you help me to book a flight ticket?

ASSISTANT: Sure Laura, I will help you with that. Can I have your travel dates please?

USER: I want to fly in the flight on 10/31 and 11/02.

ASSISTANT: Ok Laura, please wait a moment to check flight availability.

USER: Ok, take your own time.

ASSISTANT: Sorry Laura Young, no flight is available to you on your dates due to some weather conditions.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for choosing us, have a good day.