You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Owing to an emergency, I would like to change my existing reservation to some other dates. Can you help me?

ASSISTANT: Sure, may I know your name please to check your reservation status?

USER: Please check with the name Sharon Scott.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Scott, no reservation has been found on your name in our database.

USER: Its ok, I guess I made a mistake while booking. Anyways, thank you for the information.

ASSISTANT: Thank you for approaching us.