You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Edward Martin.

ASSISTANT: How can I assist you?

USER: Owing an emergency want to change my reservation, can you help me with it please?

ASSISTANT: Yes, I can help you.

USER: Thank you.

ASSISTANT: Give me a moment.

USER: Ok, take your time.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for reaching us.