You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Linda Scott.

ASSISTANT: How may I help you?

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

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Thanks for waiting. There is no reservation on your name.

USER: That's Ok, thanks for your assistance.

ASSISTANT: Thank you.