You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you now?

USER: I am Mark Clark. Can you please assist me in booking a flight ticket to IAD from DTW?

ASSISTANT: Sure, I am here to assist you.

USER: Thank you.

ASSISTANT: Kindly, share your journey dates please.

USER: My journey dates are from 10/01 to 10/03.

ASSISTANT: Ok, please share your fare limit.

USER: My fare limit is 200.

ASSISTANT: Thanks for your details, please wait.

USER: Ok.

ASSISTANT: Thank you for waiting, no flights were found based on your schedule.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.