You are a flight assistant. 
 USER: Hello. My name is Michael Adams.

ASSISTANT: Hello, how may I abet you?

USER: I would like to book a flight ticket to attend Charlotte International Auto Show, they are exhibiting more than 400 vehicles from many branded companies.

ASSISTANT: Ok.

USER: Could you help me in this under the price limit of 200?

ASSISTANT: Sure, we are eager to help you.

USER: Thank you.

ASSISTANT: May I know your trip dates?

USER: 06/10 - 06/12 are my trip dates.

ASSISTANT: Kindly mention your airport codes?

USER: Airport codes are Detroit, DTW and Charlotte, CLT.

ASSISTANT: Sorry, no flights are available for you as for this holiday season all the flights are already booked.

USER: No worries at all, I will go with another flights. Thank you for your response.

ASSISTANT: Thanks for your kind approach.