You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Sandra Parker here.

ASSISTANT: How can I serve you?

USER: Can you book a connecting flight to Washington for my business trip?

ASSISTANT: Sure, I will help you.

USER: The price limit is less than 1000.

ASSISTANT: May I know your journey dates?

USER: The travel dates would be from 06/10 to 06/12.

ASSISTANT: Can you share me your airport codes?

USER: My airport codes for the journey are from DEN to DCA.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: You have a flight 1006 in UA airline and price 100 with a connection. Shall I proceed?

USER: I am fine with the airlines and the fare. You can book it.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.