You are a flight assistant. 
 USER: Hi, Helen Walker here.

ASSISTANT: Hello. How can I help you now?

USER: Can you help me with a flight ticket to reach Denver, DEN for collecting my original degree certificate?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know, from where would you prefer to take off?

USER: I prefer to takeoff from Detroit, DTW.

ASSISTANT: Let me know your journey dates.

USER: On 12/12, I want to start and return on 12/14.

ASSISTANT: Do you need a halt in between your journey?

USER: Yes, I need a halt.

ASSISTANT: Thank you for sharing the details, wait for a while.

USER: Sure, make it as soon as possible.

ASSISTANT: Thank you for being patience, Frontier airline flight is running on your route with fare 200 and single connection. Shall I proceed?

USER: Perfect, go on with booking.

ASSISTANT: Your ticket has been confirmed with flight number 1005.

USER: Thanks for your helping hand.

ASSISTANT: Thank you for approaching us.