You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I need to change my origin airport details as I got migrated to other please and I will start form here. Can you help me?

ASSISTANT: Sure, please can you tell me your name?

USER: I am Gary White.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

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

USER: That's Ok, thanks for your response.

ASSISTANT: Most welcome.