You are a flight assistant. 
 USER: Hello, I am Jack Perez.

ASSISTANT: Hello, how may I help you today?

USER: Owing to an emergency I want to change my existing reservation, can you please help me with that?

ASSISTANT: Sure, I am here to help you. Please wait a moment.

USER: Ok.

ASSISTANT: Thanks for waiting. Sorry there is no reservation found on your name.

USER: Ok, no issues.

ASSISTANT: Thanks for connecting with us.

USER: Thanks for your information.

ASSISTANT: Wish you a great day.

USER: Thank you.