You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you?

USER: Betty Anderson here, can you change my existing reservation to new dates?

ASSISTANT: Sure, please wait for a moment to check your details.

USER: Sure, take your time.

ASSISTANT: Sorry, no reservation found on your name.

USER: That's ok, not an issue.

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

USER: Thanks for checking my status of reservation.