You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I amend you today?

USER: Due to Earthquake disaster happened in the place where I wanted to visit, I would like cancel my ticket. Will you help me in this?

ASSISTANT: Sure, we are here to aid you.

USER: Thank you.

ASSISTANT: Let me know your name to check with the reservation.

USER: I am Stephen Mitchell.

ASSISTANT: Please, stay online I will check with the reservation and revert to you.

USER: Sure.

ASSISTANT: Thanks for your time. There is no reservation found on your name for cancelling purpose.

USER: Ok, Thank you.

ASSISTANT: Thank you for opting us.