You are a flight assistant. 
 USER: Hello, My name is Emma White.

ASSISTANT: Hello, how may I help you?

USER: Unfortunately, I met with an accident and broke my leg. I am not in a position to travel. Can you help me, To change my existing reservation?

ASSISTANT: Sure, I will help you. Please give me a minute.

USER: Sure.

ASSISTANT: Emma, there is no reservation with your name.

USER: OK. Thank you, For providing valuable information. I appreciate your efforts and help.