You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I serve you?

USER: As my friend met with an accident I want to be there with him So, can you please cancel my reservation?

ASSISTANT: That's so sad!. I will surely help you with that. Can I have your name for checking your previous reservation in our database?

USER: Reservation was done by the name Barbara Lewis.

ASSISTANT: Ok Barbara, give me a moment to check.

USER: Sure, take your time.

ASSISTANT: Barbara, we find it in our database but there is no reservation found under your name.

USER: That's ok, thanks for the information.

ASSISTANT: You are welcome. Thank you for reaching us.