You are a flight assistant. 
 USER: Hi, Laura Baker here.

ASSISTANT: Hello, how can I assist you?

USER: Owing to an emergency, my planned trip to Death valley adventure has been postponed. So I want you to change my existing reservation?

ASSISTANT: Sure, wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting there is no reservations found on your name. Thanks for choosing us.

USER: Ok, no worries at all. Thanks for your assistance.