You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I oblige you today?

USER: My name is Daniel Turner. Owing to emergency, I need to change my recent reservation. Please help me with that.

ASSISTANT: Sure, please wait.

USER: Sure.

ASSISTANT: Sorry we couldn't find any reservation on your name.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us.

USER: Most Welcome.