You are a flight assistant. 
 USER: Hi, I am Mark Johnson.

ASSISTANT: Hello, how could I serve you the best today?

USER: I am planning to visit Denver DEN to enjoy beach holidays with friends. Can you make a reservation with fare 5000?

ASSISTANT: Sure, to book a ticket may I know when would you like to depart and arrive?

USER: Sure, I need to fly on 08/15 and 08/17.

ASSISTANT: Can you please help me with your origin point?

USER: Sure, my origin point is Boston BOS.

ASSISTANT: How much can you spend for flight ticket?

USER: Already mentioned above.

ASSISTANT: Thanks for sharing your details. I found a flight with an airline UA of flight 1008 and price is 100 with one connection which matches your given details. Should I proceed with the booking?

USER: Yes, you can.

ASSISTANT: Your flight ticket has been reserved on name of Mark Johnson.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us.