You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Susan Turner here.

ASSISTANT: Susan, how can I help you today?

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 glad to help you in changing your reservation, please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Turner, I have not found any reservation by your name in our database.

USER: Oh, I think my cousin have changed my reservation. Anyways, thank you for the information.

ASSISTANT: Thank you for contacting us and have a nice day.

USER: Welcome.