You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

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

ASSISTANT: Sure, I am here to help you. May I know your name?

USER: Jonathan Lewis here.

ASSISTANT: Please wait for a second.

USER: Sure, I will wait.

ASSISTANT: There is no reservation found under your name.

USER: That's ok. Thank you.

ASSISTANT: Thank you for choosing us.