You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you?

USER: Can you help me to change my reservation?

ASSISTANT: Sure, will you please mention your name?

USER: My name is Larry Jackson, please check my details under this name.

ASSISTANT: Ok, let me check the status and revert you.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found under your name in our data base.

USER: That's fine, thank you for your information.

ASSISTANT: Thank you for choosing us.