You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I render you?

USER: Due to some family issue I cant attend my friends wedding can you please change my existing reservation?

ASSISTANT: Sure, I will help you. May I know your name to check the reservation status?

USER: I am Jennifer Turner.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: Thanks for waiting. There was no reservation found on your name in airline data.

USER: Thank you for the information.

ASSISTANT: Thank you for approaching our service.