You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jack Adams.

ASSISTANT: How may I assist you today?

USER: Owing to an urgency, I would like to cancel my recent reservation. Will you help me with this?

ASSISTANT: Sure, I am here to help you with that, please wait for a minute.

USER: Sure, take your own time.

ASSISTANT: Sorry, I could not find any reservation with your name in our database.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Welcome.