You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I support you?

USER: Due to heavy rainfall my basketball tournament has been postponed, I would like to change my existing reservation. Will you help me in that?

ASSISTANT: Sure, may I know your name please?

USER: My name is James Hill.

ASSISTANT: Please hold on, I will check in the reservation list and get back to you with the current status.

USER: Sure.

ASSISTANT: Sorry James Hill, there is no active reservation on your name in our data base.

USER: No issues, thank you.

ASSISTANT: Thanks for reaching us.