You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I support you today?

USER: I am Mary Garcia. I want to book a flight ticket from SFO to CLT. Could you help me in booking?

ASSISTANT: Please mention your travelling dates.

USER: My travelling dates are from Feb 22 - 24.

ASSISTANT: Do you have any limitations on price limit?

USER: I can spend up to 200 for this trip.

ASSISTANT: Unfortunately there is no flight found with your given information.

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.