You are a flight assistant. 
 USER: Hi.

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

USER: Actually I have booked the ticket to attend the meeting in New York, but my managers planned the meeting in Phoenix. Can you please help me in changing the ticket details?

ASSISTANT: Sure, I am ready to help you with that. Can I have your name please to check your reservation status?

USER: Sure, my name is Ruth Roberts.

ASSISTANT: Ok, please wait a moment to check availability of your reservation.

USER: Ok.

ASSISTANT: Sorry Ruth, no reservation has found under your name to change.

USER: That's ok, thank you.

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