You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Myself Jennifer Thompson. For some issues I want to change my reservation, can you please help me?

ASSISTANT: Yes, please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, I could not found any previous booking found on the name which you have provided.

USER: It's ok. Thank you for the information.

ASSISTANT: Welcome.