You are a flight assistant. 
 USER: Hi, I am Mark Clark.

ASSISTANT: Hello, how may I aid you today?

USER: I want to book a flight ticket with price under 200, so can you help me with booking?

ASSISTANT: Sure, help me with the trip dates?

USER: Ok, my travelling dates are 07/04 and 07/06.

ASSISTANT: Could you please share me your airport codes?

USER: Yes, my airport codes are WA-SEA and Denver, CO-DEN.

ASSISTANT: Please be on hold.

USER: Ok.

ASSISTANT: Thanks for waiting, we are pleased to inform you that we have found a JetBlue airline, flight number-1001 connections-1 and price limit is 100. Shall I proceed to book?

USER: Yes, please.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.