You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be your helping hand today?

USER: I am Elizabeth Edwards. I need to change my recent reservation due to postpone of my exam. Could you please help me in doing that?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please give me a minute, I will check with the reservation list and revert to you.

USER: Sure.

ASSISTANT: Thank you for your time, There was no active reservation found on your given name.

USER: No worries, thank you for your information.

ASSISTANT: Thank you for reaching us.