You are a flight assistant. 
 USER: Hi, I am Rachel Williams.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Sure, kindly mention your travel dates?

USER: Yes, I have planned to travel on 06/30 and 07/02.

ASSISTANT: Can you please provide me your airport codes?

USER: My airport codes are WA-SEA and NC-CLT.

ASSISTANT: Ok, please wait  a moment.

USER: Ok.

ASSISTANT: Sorry to say, no flight found with your requirement.

USER: That's ok, thank you for the response.

ASSISTANT: Thanks for reaching us, have a good day.