You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I just want to change an existing reservation due to my adventure sport  got post pone.

ASSISTANT: Ok, please provide your name to change your reservation?

USER: I am Carol Campbell.

ASSISTANT: There were no reservation found with the given name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for connecting us.