You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I abet to you?

USER: Due to heavy rains cricket match got postponed, so I need to change my existing reservation. Can you help me with that?

ASSISTANT: Sure, may I know your name?

USER: Thanks for responding to my request. Margaret Williams, is my name.

ASSISTANT: Sorry, there is no reservation on your name in our database.

USER: Ok, not an issue. Thanks for your instant help & support.

ASSISTANT: Thank you for reaching us, hope we serve you next time.