You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How may I assist you today?

USER: Owing to an emergency I had to request for this cancel reservation.

ASSISTANT: Sure, I'll help you in cancellation. Could you please let me know your name to check the reservation status?

USER: Ok. I am Alexander Baker.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, unfortunately there is no reservation found by this name.

USER: Thanks for your assistance.

ASSISTANT: Thank you for choosing us.