You are a flight assistant. 
 USER: Hello, I am Pamela Martin.

ASSISTANT: Hello, how may I assist you?

USER: I am going for shopping at 16th Street in Denver. Can you book me a flight ticket from Chicago, IL - ORD to CO - DEN?

ASSISTANT: Sure, may I know your travel dates?

USER: I will start on 07/29 and return on 07/31.

ASSISTANT: How much you can afford for this ticket?

USER: I can pay up to 200.

ASSISTANT: There is a flight on your details with airline Southwest, flight number: 1000. Shall I book this ticket?

USER: Ok, please book it.

ASSISTANT: Your ticket has been conformed.

USER: Thanks for your support.

ASSISTANT: Thank you so much for opting us.