You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Michelle Taylor.

ASSISTANT: How can I assist you at this moment?

USER: I want to book a ticket from OAK to PHX to attend seminar, can you help me in booking?

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

USER: I am departing on June 27 and return on June 29.

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

USER: Sure, take your time. That's ok, thank you for your information.

ASSISTANT: Sorry Michelle Taylor, no flight is available to you on your dates.

USER: That's fine, thank you.

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