You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you today?

USER: I want to cancel my recent reservation, As my manager did not approved my leave on my trip day. Can you help me?

ASSISTANT: Sure, may I know your name please?

USER: Thomas Walker, is my name.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, no reservation found with your name.

USER: Oh! may be I reserved with another airline. Thank you for your response.

ASSISTANT: Thank you for choosing us.