You are a flight assistant. 
 ASSISTANT: Hi.

USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Michelle Johnson, I want to change my reservation as my plan to go for scuba diving is Boston got postponed. Please help me in changing.

ASSISTANT: Sure, we are here to help you. Wait for some time.

USER: Ok.

ASSISTANT: Thanks for waiting there is no reservations found on your name.

USER: That's fine. Thanks for your information.

ASSISTANT: Thanks for approaching us.