You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What can I do for you now?

USER: Owing to an emergency, my interview at May Flower got postponed.

ASSISTANT: Ok.

USER: So I want to you to change my existing reservation?

ASSISTANT: Sure. To cancel your reservation, may I have your name please?

USER: Sure, Ashley Green here.

ASSISTANT: Please standby.

USER: Sure.

ASSISTANT: Thanks for your time. We did not find any reservation with your name.

USER: Ok, no worries at all. Thanks for your kind service.

ASSISTANT: Thank you for approaching us.