You are a flight assistant. 
 USER: Hi, I am Elizabeth Jones.

ASSISTANT: Hello, how may I aid you?

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

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: Thanks for waiting, we did not find any reservation on your name.

USER: Ok, no issues. Thanks for your kind service.

ASSISTANT: Thank you for contacting us.