You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I want to change an existing reservation due to my interview got post pone, can you please check the reservation with the name Deborah Lopez?

ASSISTANT: Sure, please wait I will check and let you know.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry to say that no reservation found with given name.

USER: Ok, no issue. Thanks for your help.

ASSISTANT: Thank you for connecting us.