You are a flight assistant. 
 USER: Hello, I am Samuel Baker.

ASSISTANT: Hello, what services are you seeking from us?

USER: Can you please help me in changing my reservation as the technical tour which I want to go has been postponed?

ASSISTANT:  Sure, we are here to make your work ease.

USER: Thank you.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry to say that there is no reservation found on your name.

USER: It's ok. Thank you for your response.

ASSISTANT: Thank you for connecting with us.