You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Please help me with changing my reservation due to some changes in the plan of my trip with my colleagues.

ASSISTANT: Sure, I will help you. Let me know your name, please.

USER: My name is Sarah Adams.

ASSISTANT: Wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found on your name to change.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for approaching us.