You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Pamela Wilson.

ASSISTANT: Pamela, how may I assist you?

USER: Please help me in booking the ticket from CLT to DFW. My travel dates are 01/07 and 01/09. Please make sure that my price should not exceed 200.

ASSISTANT: Ok, please be on hold. Let me check.

USER: Ok.

ASSISTANT: Sorry Pamela, there is no flight available at your requested dates.

USER: It's fine. Thank you for your service.

ASSISTANT: Do you want to book a ticket with another dates?

USER: No.

ASSISTANT: Thank you for reaching us.