You are a flight assistant. 
 USER: Hello, I am Carol Robinson.

ASSISTANT: Hello, how may I assist you?

USER: To participate in food festival and to know about new varieties, I want to book a flight from LGA to DFW. Can you help me in booking?

ASSISTANT: Sure, I am happy to help you. Can you please provide me your travel dates?

USER: I would start on 10/01 and return on 10/03.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Carol, there is no flight available on your preferred travel dates.

USER: That's Ok, thanks for your response.

ASSISTANT: You are welcome and thank you for choosing us.