You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you?

USER: I am Elizabeth Jackson. Can you help me in changing my recent reservation, as my interview is postponed?

ASSISTANT: Elizabeth Jackson, can you please wait for a while till I check with your previous booking?

USER: Sure.

ASSISTANT: Sorry to say but there is no active reservation found by your name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for consulting with our services.