You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am going to visit the best places in Denver, DEN, can you book a ticket?

ASSISTANT: Sure, May I know the full details of your journey?

USER: My depart is 07/16 and my arrival is 07/18. I should start from ORD.

ASSISTANT: Thank you for the details.

USER: Ok.

ASSISTANT: Please wait a moment, I will check the availability and get you back.

USER: Sure, I will wait.

ASSISTANT: Thank you for waiting, We found Jet Blue airline with flight number 1025 and price is 100 matched your information. Shall I proceed for booking? May I know your name please?

USER: Sure, you can proceed booking on my name Jonathan Carter.

ASSISTANT: Your booking has been confirmed. Thank you for choosing us, Have a nice journey.

USER: I am glad at your service, Thank you.