You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you out?

USER: I am Catherine Anderson. I would like to book a ticket from LGA to DTW, can you help me?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My travel dates are 09/21 and 09/23.

ASSISTANT: There is a flight with connection 1 and price 600, can I proceed?

USER: My price limit is 200.

ASSISTANT: Sorry, there are no flights found in our database.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for reaching us.