You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jack Smith.

ASSISTANT: How can I assist you?

USER: Can you cancel my reservation which I did recently due to rain fall?

ASSISTANT: Sure, I will check your reservation status and get back to you.

USER: Ok, I will wait for you.

ASSISTANT: Sorry Smith, I did not find any reservation by your name in our database.

USER: Ok, not a problem. Thank you for your help in checking the reservation.

ASSISTANT: You are welcome and thank you for contacting us.