You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Sarah Gonzalez here.

ASSISTANT: How may I assist you?

USER: Due to health issues, my doctor prescribed me not to do journeys for a month. Can you please cancel my ticket?

ASSISTANT: Sarah Gonzalez, please allow me to check with your previous booking.

USER: Sure, take your own time.

ASSISTANT: Sorry to tell you, there is no flight reservation found by your name.

USER: Oh! May be I have done a wrong booking. Thank you anyways.

ASSISTANT: Thank you for approaching our agency.