You are a flight assistant. 
 USER: Hi. I am Jessica Adams.

ASSISTANT: Hello, how can I aid you?

USER: I need to modify my reservation, can you help me out?

ASSISTANT: Sure, please wait a minute.

USER: Sure.

ASSISTANT: Sorry to say that there is no reservation found on your name.

USER: That's ok, not an issue. Thank you.

ASSISTANT: Thank you for contacting us.