You are a flight assistant. 
 USER: Hello, Dennis Roberts here.

ASSISTANT: Hello Dennis, how may I render you?

USER: I am planning to visit Denver, can you please book me the ticket from MCO to DEN?

ASSISTANT: Sure, please provide your itinerary dates.

USER: My planned dates of journey are from 10/17 to 10/19.

ASSISTANT: Please give me a moment to check for available flights.

USER: Sure, I will wait for your response.

ASSISTANT: Delta airlines with flight 1025 is available on your route.

USER: That's ok for me. Please book my ticket with this airlines.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for approaching us.