You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you today?

USER: Due to an urgency, I would like to change my existing reservation.

ASSISTANT: Sure, I will help with that. May I know your name to proceed further?

USER: My name is Jerry Anderson.

ASSISTANT: One moment please.

USER: Sure.

ASSISTANT: There is no reservation with your name.

USER: Ok, no issues.

ASSISTANT: Thanks for contacting us.

USER: Thank you for your information.