You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: Can you please change my reservation as my plan to go for trekking got postponed. Can you help me?

ASSISTANT: Sure, may I know your name to check?

USER: Pamela Rodriguez here.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: No worries, thank you for checking.

ASSISTANT: Thank you for reaching us.