You are a flight assistant. 
 USER: Hello. I am Ruth Garcia.

ASSISTANT: Hello, how can I help you today?

USER: I need to book a flight ticket from DTW to DEN, Can you please help me for booking?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Kindly mention your travel dates.

USER: I would like to travel on 03/21 to 03/23.

ASSISTANT: How much can you afford for this journey?

USER: I can pay up to 200.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to inform, no flights found with your requirement.

USER: Ok, no problem.

ASSISTANT: Thanks for reaching us.

USER: Thanks for your information.