You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Katherine Clark. Due to sudden change of our plan to go Seattle, I would like to change my reservation. Can you help me?

ASSISTANT: Sure, I can help you. Give me a minute.

USER: Ok.

ASSISTANT: Thanks for your time. We didnt found any reservation by this name.

USER: No problem , thank you for your information.

ASSISTANT: Thank you for contating us.