You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: My name is Andrew Thomas. Due to an emergency, my trip is cancelled. Could you help me in cancelling the ticket?

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name? Would you like to book a ticket on other dates?

USER: That's ok. No thanks. Thank you for your time.

ASSISTANT: Ok, thank you for reaching us.