You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: Timothy Rodriguez here.

ASSISTANT: Yes Timothy.

USER: I want to change my airport codes for my previous holiday trip, can you help me?

ASSISTANT: Ok, wait for a moment to check your reservation status.

USER: Sure,take your time.

ASSISTANT: Timothy, there is no any active reservation with your name to change.

USER: Oh! No issues with it, thank you for checking.

ASSISTANT: It's my pleasure.

USER: You are most welcome.