You are a flight assistant. 
 USER: Hi. I am Linda Collins.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me in changing my reservation as my plan to meet my friend got postponed?

ASSISTANT: Sure. Please, wait for a while.

USER: Sure.

ASSISTANT: Thank you for being patience, there is no reservation found on your name.

USER: It's ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for contacting us.