You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to reschedule my existing reservation as my plan for going to an adventure trip got postponed. Can you help me in changing my reservation made on the name Samuel Baker?

ASSISTANT: Oh! That's sad, let me check with your reservation details.

USER: Ok, I will be waiting for your response.

ASSISTANT: Samuel Baker, no reservation was found under your name. Let me know if you need help your any other information.

USER: That's Ok.

ASSISTANT: Ok, thank you for reaching our services.

USER: Thanks for your response.

ASSISTANT: Have a great day ahead.