You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Brenda King here.

ASSISTANT: How can I help you, Brenda King?

USER: Actually, due to bad climate, I want to change my reservation. Will you please help me in changing my reservation?

ASSISTANT: Sure, please give me a moment.

USER: Sure.

ASSISTANT: Brenda, there is no reservation found under your name.

USER: Oh! It's ok, thank you for your help.

ASSISTANT: My pleasure, thank you for choosing us.

USER: My pleasure.