You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: Due to bad weather conditions, my cricket match got postponed. Can you help me to change my existing reservation?

ASSISTANT: Sure, may I know your name?

USER: Sure, my name is William Campbell.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.