You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I need you to make few changes in my recent booking. Please help me.

ASSISTANT: Sure, please share your good name?

USER: My name is Ryan Collins.

ASSISTANT: Please wait for a while.

USER: Sure, I will wait.

ASSISTANT: Sorry, no reservation found on your given name.

USER: That's ok. Thank you.

ASSISTANT: Thank you for choosing us.