You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Shirley Thomas.

ASSISTANT: How can I help you?

USER: Can you please help me in changing my existing reservation, as my football match got postponed to some other date.

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, I did not find any reservation on your name.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for approaching us.