You are a flight assistant. 
 USER: Hello.

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

USER: I am Shirley Clark, I need to book a flight ticket to IAD from JFK to meet my friend in the month of June. Can you please help me out?

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

USER: Thank you, my travel dates are 06/17 and 06/19.

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

USER: Sure.

ASSISTANT: Sorry Sharon Perez, no flight is available to you on your dates.

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

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