You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brenda Martinez.

ASSISTANT: How may I aid you?

USER: I need to book a flight ticket from PHL to DEN, Can you please help me with that?

ASSISTANT: Sure, can I have your travel dates?

USER: I would like to travel on 05/15 to 05/17.

ASSISTANT: Do you have any budget limit?

USER: Yes, I can pay up to 500.

ASSISTANT: THank you for your details, we found a flight in an airline Spirit of number 1003 having a single connection with a price of 200. Shall I proceed to book?

USER: Ok, proceed for booking.

ASSISTANT: Your flight ticket is booked.

USER: Thanks for your information.

ASSISTANT: Thank you for reaching us.