You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you now?

USER: I am Stephanie Campbell. I would like to book a ticket to Washington, can you please help me out?

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

USER: I am travelling on these dates 03/09 and 03/11.

ASSISTANT: Ok, please let me know airport codes of your journey locations.

USER: I am flying from PHX to IAD.

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

USER: Sure.

ASSISTANT: Sorry Stephanie Campbell, no flight is available to you on your dates.

USER: Ok no problem, thank you for your services.

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