You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I would like to change my reservation which is under my name, as my convocation meeting has been postponed. Can you please help me with that?

ASSISTANT: Can you please tell me your name?

USER: Sure, my name is Thomas Robinson.

ASSISTANT: Ok, please wait a minute.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no active reservation found under your name in our records.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Most welcome.