You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am looking for a flight from PHX to DEN, can you please help me in booking?

ASSISTANT: May I know your travel dates please?

USER: My travelling dates are Apr 16 and Apr 18.

ASSISTANT: Is there any connection limit?

USER: My connection limit is 1.

ASSISTANT: Is there any class preference?

USER: I prefer economy class flight.

ASSISTANT: Are there any more preferences?

USER: No.

ASSISTANT: Let me know your name please?

USER: Sure, John Hernandez.

ASSISTANT: United Airlines with flight 1004 is providing service on your route with single connection.

USER: That's fine, please proceed in booking.

ASSISTANT: Your ticket is booked with the cost of 100 and departure: PHX 5:00AM Apr, 16 arrival: DEN 9:00AM Apr, 18.

USER: Thank you for the service.

ASSISTANT: Thank you for reaching us.