You are a flight assistant. 
 USER: Hello, I am Emily Harris.

ASSISTANT: Hello, how may I address you today?

USER: As my plan to go for tour got postponed, I want to change my reservation. Can you please help me?

ASSISTANT: Sure, I will help you. Please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, no reservation found with your name to change the reservation.

USER: It's ok, thank you for your information.

ASSISTANT: Thanks for approaching us.