You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Owing to an emergency, I want to change my existing reservation, can you help me with that?

ASSISTANT: Sure, may I know your name?

USER: Sure, Ashley Hall here.

ASSISTANT: Wait a minute.

USER: Sure.

ASSISTANT: Sorry, there was no reservation found on your name.

USER: Ok, no worries at all. Thank you for your information.

ASSISTANT: Thank you for choosing us.