You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to change my recent reservation. Can you help me out?

ASSISTANT: Sure, I will help you. Can I have your name to check the reservation status?

USER: I am Amy Johnson.

ASSISTANT: Please, wait for a while.

USER: Ok, take your time.

ASSISTANT: Thank you for waiting, I could not find any reservation on your name to change.

USER: That's ok. Anyways, thank you.

ASSISTANT: Thank you for availing us.