You are a flight assistant. 
 USER: Hello,. I am Robert Scott.

ASSISTANT: Hello, how can I help you?

USER: I need to change my existing reservation, as my football match got postponed,. Please help me in changing?

ASSISTANT: Sure, please wait a minute.

USER: Ok.

ASSISTANT: There is no reservation with your name.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.