You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am Susan Martin here. I would like to book a flight ticket from BOS to ORD. Can you please help me with that ticket booking?

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

USER: My travelling dates are from 09/15 to 09/17.

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

USER: Sure, I will wait for your response.

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

USER: Not a big problem, anyway, thank you for the information.

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

USER: Thank you for searching.

ASSISTANT: Most welcome.