You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Jessica Thompson.

ASSISTANT: How can I assist you today?

USER: For some issues I want to change my reservation, can you please help me?

ASSISTANT: Sure, please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found under your name.

USER: It's ok. Thank you for the information.

ASSISTANT: Thanks for reaching us, have a great day.