You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I would like to change my existing reservation because my friend met with an accident.

ASSISTANT: Sure, I will help you. May I know the name on which ticket has been booked?

USER: Sure, my name is Richard Wilson.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation showing on your given name.

USER: It's ok, no problem.

ASSISTANT: Thank you reaching us.

USER: Thank you for checking.

ASSISTANT: You re welcome.