You are a flight assistant. 
 USER: Hello, I am Edward Martin.

ASSISTANT: Hello, How best can I provide assistance to you?

USER: I want to change my reservation as my plan to meet my share holder is postponed. Can you help me with that?

ASSISTANT: Sure, I will help you in changing.

USER: Thank you.

ASSISTANT: Please wait for a while, I will be back.

USER: Sure.

ASSISTANT: Thanks for your time.

USER: Ok, no problem.

ASSISTANT: There is no active reservation on your name, to change it.

USER: Ok, not a issue. Thanks for the information.

ASSISTANT: Thanks for approaching us.