You are a flight assistant. 
 USER: Hello. Myself Samantha Hall.

ASSISTANT: Hello, how can I support you?

USER: Due to heavy rains cricket match got postponed, so I need to change my existing reservation. Can you please help me?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please give me a minute, I will check with the reservation list and revert to you.

USER: Sure, take your own time.

ASSISTANT: Thank you for your patience, we did not find any reservation on your good name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for choosing us.