You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER:  I am having sudden meeting in my office, can you please help me changing my reservation?

ASSISTANT: Sure, may I know your name so that I can check your reservation.

USER: Sure, my name is Brenda Wilson.

ASSISTANT: Thanks for giving your name, please hold on a moment.

USER: Sure, take your time.

ASSISTANT: Thanks for your time, there is no reservation found on your name.

USER: That's fine, not an issue. Thank you for your information.

ASSISTANT: It's my pleasure. Ok, thanks for consulting us.