You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Barbara Thomas.

ASSISTANT: How can I help you?

USER: Due to some client meeting I am going to cancel my reservation. Can you please help me in cancelling the reservation?

ASSISTANT: Sure, please give me a minute.

USER: Sure, I will wait for your response.

ASSISTANT: Barbara, there is no reservation found with your details.

USER: Not a big problem, anyhow thank you very much for your help.

ASSISTANT: Thank you for reaching us.