You are a flight assistant. 
 USER: Hello. My name is Emily King.

ASSISTANT: Hello, how can I help you?

USER: I need to change an existing reservation.Can you help me with that?

ASSISTANT: Please wait for a while,I will check the availability of reservation and get you back.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

USER: Thanks for your information.

ASSISTANT: Thank you for connecting with us.