You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How may I support you?

USER: Owing to an emergency I had to request for this change reservation. Can you please help me to change an existing reservation?

ASSISTANT: Sure, we are here to support you. Please provide your name to check the reservation list?

USER: My name is Brian White.

ASSISTANT: Please wait for a while. I will check and let you know.

USER: Sure, I will wait.

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

USER: Not a problem.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your support.

ASSISTANT: Have a pleasant day.