You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I be of your service?

USER: Due to heavy rains my cricket match is postponed, can you help me to change my reservation?

ASSISTANT: Sure, please let me know your name to proceed futher.

USER: I am Michael Smith.

ASSISTANT: Wait a moment I will check and revert to you.

USER: Ok.

ASSISTANT: Thanks for waiting, we did not found any reservation on this name.

USER: Ok, no issues.

ASSISTANT: Thanks for reaching us.