You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: Can you please help me to change the trip dates in the existing reservation? Because I have postponed my trip.

ASSISTANT: Sure, May I know your name?

USER: Thank you for accepting my request. My name is Michael Rodriguez.

ASSISTANT: Ok, please wait a minute.

USER: Ok, take your time.

ASSISTANT: Thanks for waiting, there is no active reservation on your name.

USER: It's ok, not a problem with that. Thank you for checking my ticket status.

ASSISTANT: Thank you.