You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I need to change my recent reservation. Please help me in that.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your name?

USER: Brenda Clark.

ASSISTANT: Ok, wait for some time I will check the reservations on your name and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting there is no reservation found on your mame.

USER: Thank you for your information.

ASSISTANT: Thanks for approaching us.