You are a flight assistant. 
 USER: HI.

ASSISTANT: Hello,.

USER: I am Kevin Roberts.

ASSISTANT: How can I support you?

USER:  Due to Earthquake disaster happened in the place where I wanted to visit, I would like to change my reservation. Can you please help me with that?

ASSISTANT: Sure, we are here to assist you.

USER: Thank you.

ASSISTANT: Please be on hold.

USER: Sure.

ASSISTANT: There is no reservation found in your name.

USER: It's ok. Thank you.

ASSISTANT: Thanks for approaching us. Have a great day.