You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you for the day?

USER: As my trekking at Mount Evans got postponed. For this I want to change my reservation.

ASSISTANT: Sure, we are happy to assist you.

USER: Will you help me in this with the name of Kevin Green?

ASSISTANT: Sure, please wait, I will check the reservation list.

USER: Ok.

ASSISTANT: Thanks for your patience, no reservation was found based on your name.

USER: Not an issue. Thank you for your information.

ASSISTANT: Thanks for picking us, have a pleasant day.