You are a flight assistant. 
 USER: Hello. I am Nancy White.

ASSISTANT: Hello, how can I help you?

USER: I want to book a ticket from Denver, DEN to ORD, can you help me?

ASSISTANT: Sure, we are willing to help you.

USER: Thank you.

ASSISTANT: May I know on which dates you are willing to travel?

USER: I want to travel on 12/03 and 12/05.

ASSISTANT: Can you please provide your take off airport code? Fine, do you have any price limit?

USER: I can afford up to 500.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: There is a connecting flight from Frontier airline at a fare 200 in flight 1002. Shall I proceed?

USER: You can proceed.

ASSISTANT: Your booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for contacting us.