You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I need to change my reservation due to my planned event got cancelled so please help me with that.

ASSISTANT: On which name can I find your reservation?

USER: Please check the reservation with my name Linda Thomas.

ASSISTANT: I am sorry to say, no reservation found on your name.

USER: Oh! May be booking has not done properly due to server issue.

ASSISTANT: Thanks for choosing us.

USER: Anyway, thank you for your time.