You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: My trip was postponed so can you please change my travel dates in my previous reservation?

ASSISTANT: Sure, kindly share your name.

USER: Thank you for your response, my name is Sarah Baker.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Sorry to say, no reservation found with your name.

USER: It's ok no problem.

ASSISTANT: Thanks for reaching us.

USER: Thank you for your information.