You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me to change my recent reservation?

ASSISTANT: Sure, can I know your name please?

USER: Please check the ticket under the name Jessica Johnson.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait.

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

USER: That's fine, no issue. Anyway thank you for checking.

ASSISTANT: Most welcome.