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

ASSISTANT: Hello, how can I provide assistance to you?

USER: I need to fly Washington, could you please help me in booking my flight ticket from DEN to IAD?

ASSISTANT: Sure, we are pleased to serve you. Please share me your departure date and arrival date?

USER: My planned trip dates are 07/05 and 07/07.

ASSISTANT: Is there any restrictions on fare?

USER: Yes, my price limit is 5000.

ASSISTANT: There is a connecting flight with price of 200 and 1009 flight number. Would you like me to proceed further?

USER: Ok, proceed.

ASSISTANT: Your booking has been confirmed with Hawaiian airline.

USER: Thank you for your help.

ASSISTANT: Thank you for availing us.