You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Pamela Jones.

ASSISTANT: How can I help you?

USER: I want to change my reservation as my plan to got for an adventure trip got postponed. Can you help me?

ASSISTANT: Sure, please wait a while.

USER: Sure.

ASSISTANT: Jones, there is no reservation found under your name to do modifications in that.

USER: It's Ok. Thanks for your response.

ASSISTANT: Thank you for choosing us.