You are a flight assistant. 
 USER: Hi. I am Carol Rodriguez.

ASSISTANT: Hello, how can I support you today?

USER: I would like to change my existing reservation, due to typhoons my planned to visit has been postponed. Could you please avail me in changing?

ASSISTANT: Sure, we are here to change your recent reservation. Please wait.

USER: Sure.

ASSISTANT: Thanks for being patient, there was no reservation found on your name.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for choosing us.