You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Amy Thompson. Owing to an emergency, I want to change an existing reservation.

ASSISTANT: Ok.

USER: Could you help me in changing the reservation?

ASSISTANT: Sure, I am here to help you. Please, standby.

USER: Sure.

ASSISTANT: Thank you for waiting, I did not find any reservation on your name to proceed for modification.

USER: Not an issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you.