You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Barbara Thompson. Can you please assist me in changing my recent reservation?

ASSISTANT: Sure, I will assist you.

USER: Ok, thank you.

ASSISTANT: Please, standby.

USER: Ok, I will wait for your reply.

ASSISTANT: Thank you for waiting, I did not find any reservation on your name to proceed for modification.

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you for reaching us.