You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Jessica Davis.

ASSISTANT: How can I aid you now?

USER: Owing to emergency, I need to change my recent reservation. Please help me with that.

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Sorry, we have not found any reservation on your name.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us.