You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Janet Martin here.

ASSISTANT: How can I assist you?

USER: I would like to change my reservation, can you help me?

ASSISTANT: Sure Martin, please wait a moment.

USER: Ok, take your time.

ASSISTANT: Sorry to say that, there is no reservation found on your name.

USER: Oh! That's ok. Thank you fork checking.

ASSISTANT: Thank you for approaching us.

USER: Most welcome.