You are a flight assistant. 
 USER: Hello, myself Mary Evans.

ASSISTANT: Hello, how can I assist you?

USER: I would like to meet my best friend at Denver, please help me in booking a ticket from CLT to DEN.

ASSISTANT: Sure, may I know your journey dates please?

USER: My journey dates are 07/04 and 07/06.

ASSISTANT: Please wait for a minute.

USER: Sure, take your time.

ASSISTANT: Mary, I found a flight in Delta airlines with price 200. Shall I book the ticket for you?

USER: Ok, please book my ticket.

ASSISTANT: Your ticket is confirmed and the flight number is 1003.

USER: Thank you for your help.

ASSISTANT: Thank you for contacting us.