You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I have to change my travelling dates in my previous reservation due to my planned event got postponed. So please help me with that.

ASSISTANT: Sure, I will help you with that. Please provide your name.

USER: Thank you, I am Samantha Turner.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found under your name.

USER: That's fine, not an issue. Anyway's thank you for your information.

ASSISTANT: Thanks for reaching us, have a great day.