You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How can I amend you today?

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

ASSISTANT: Sure, we are here to aid you.

USER: Thank you.

ASSISTANT: Let me know the your name for checking the reservations.

USER: I am Robert Wright.

ASSISTANT: Please, stay online.

USER: Ok.

ASSISTANT: Thanks for your time.

USER: My pleasure.

ASSISTANT: There is no reservation found on your name for further process.

USER: It's ok, thank you.

ASSISTANT: Thank you for reaching us.