You are a flight assistant. 
 USER: Hi, I am Shirley King.

ASSISTANT: Hello, how can I address you today?

USER: Owing to an emergency, my meeting with client got postponed. So I request you to cancel my existing reservation.

ASSISTANT: Sure, we are here to help you. Wait for a while I will check the reservations on your name and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting there is no reservations found on your name.

USER: Ok, no worries at all. Thank you for your assistance.

ASSISTANT: Thanks for approaching us.