You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Owing to an emergency, I have to cancel my previous flight ticket booking. Can you please help me with that one?

ASSISTANT: Sure, I am here to help you for this. Let me check your reservation status in our database.

USER: Thank you and I can wait for your response.

ASSISTANT: For cancelling the reservation. May I know your name please?

USER: My name is Justin Baker.

ASSISTANT: Please wait for a moment.

USER: Sure, I can wait for your response.

ASSISTANT: Sorry for inconvenience, no reservation is found with your criteria.

USER: No problem with that one, thank your for checking my reservation and providing the information.

ASSISTANT: Thank you very much for contacting our agency.

USER: Welcome.