You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure, can I know your name?

USER: Sure, the ticket has been reserved on the name Jason Adams.

ASSISTANT: Please hold on a moment.

USER: Sure, I will wait for your response.

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

USER: That's ok, it might went wrong while at the time of initial booking due to some server issues. Thank you for the information.

ASSISTANT: Thank you for reaching us.