You are a flight assistant. 
 USER: Hi, I am Mark King.

ASSISTANT: Hello, how can I help you?

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

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting there is no flights found on your name.

USER: Ok, thanks for the information.

ASSISTANT: Thanks for choosing us.