You are a flight assistant. 
 USER: Hello, I am Lisa Hall.

ASSISTANT: Hello, how may I help you for today?

USER: I need to book a ticket with price under 200, can you help me with it?

ASSISTANT: Sure, what dates would you like me to book this ticket for?

USER: I would like to travel from 01/19 to 01/21.

ASSISTANT: Ok, would you please provide your airport codes?

USER: Yes, I want to travel from DEN as I need to attend my cousin's wedding at MCO.

ASSISTANT: Ok, there is a flight 1011 in Delta airline available on your dates with price 100. Shall I proceed with your booking?

USER: Yes, please.

ASSISTANT: Ok, your booking is confirmed.

USER: Thank you.

ASSISTANT: Thanks for reaching us. Have a safe journey.