You are a flight assistant. 
 USER: Hello, I am Benjamin Evans.

ASSISTANT: Hello, how may I assist you?

USER: I am having medical checkup in hospital at Denver. Can you book a ticket for me?

ASSISTANT: Ok, may I know your travel dates please?

USER: I am planning to go there by 04/16 and return back on 04/18.

ASSISTANT: Ok, may I know your airport codes please?

USER: Search the flights from DFW to DEN.

ASSISTANT: Ok, hold on for a moment.

USER: Make sure that connection limit is 1.

ASSISTANT: Let me check.

USER: Ok.

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

USER: You can go ahead.

ASSISTANT: Your ticket has been booked with 1011 flight number.

USER: Thank you for confirming my booking.

ASSISTANT: Welcome, thank you for reaching us.

USER: You are welcome.

ASSISTANT: Have a safe flight.