You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I assist you?

USER: Owing an emergency, I want to change my existing reservation.

ASSISTANT: Ok, I can help you with changing your reservation. May I know your good name?

USER: My name is Edward White.

ASSISTANT: Ok, please wait. I will check the status.

USER: Ok.

ASSISTANT: Thanks for your precious time. There was no reservation found on your name.

USER: That's ok, no problem.

ASSISTANT: It's my pleasure to support you. Have a good day.

USER: Thank you, for your response.