You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Myself George Campbell.

ASSISTANT: Nice to meet you George.

USER: I want to visit my native place.I want to book a ticket.

ASSISTANT: Ok, can I know the travel dates please?

USER: My travel dates are from 05/13 to 05/15.

ASSISTANT: Can I know the airport codes?

USER: My airport codes are from NV-LAS to IL-ORD.

ASSISTANT: I found a flight for you with UA airline and it costs you 100. Shall I proceed?

USER: Sure, please book my ticket.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us. Have a safe flight.