You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Rachel Jones.

ASSISTANT: Rachel Jones, How can I be your helping hand today?

USER:  I would like to cancel my booking but while cancelling, I need to enter OTP but the mobile which I mentioned while booking was expired two months back. What to do now? Could you please assist me in doing that?

ASSISTANT: Sure, I will help you in cancelling your ticket.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry Rachel Jones, there is no active reservation on your name to cancel it.

USER: No problem, thank you for your information.

ASSISTANT: Thanks for approaching us.