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

ASSISTANT: Hello, how may I serve you now?

USER: Owing to an emergency, my business conference got postponed. So I have a request to you to change my existing reservation?

ASSISTANT: Sure, I will help you with that. Please wait for a moment, while I check for the reservation.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name.

USER: Ok, no worries at all.

ASSISTANT: Thank you for visiting us.

USER: Thanks for your assistance.