You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Owing to an emergency, my planned trip to Navajo adventure got postponed. So I want you to change my existing reservation.

ASSISTANT: Sure, I will aid you. Let me know your name.

USER: Sure, Sharon Lewis here.

ASSISTANT: Please give me a minute.

USER: Sure.

ASSISTANT: Thanks for your valuable time. There is no reservation available on your name.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thanks for reaching us.