You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I provide assistance to you?

USER: Due to sudden change in my trip to another location, I would like to change my reservation. Can you please help me out?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please provide your name to check the reservation list?

USER: My name is Rebecca Allen.

ASSISTANT: Please hold on a while.

USER: Ok.

ASSISTANT: Thanks for your time. There was no reservation found on your name.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for picking us.