You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you now?

USER: I am Jonathan Anderson here, I want to reserve my ticket within the dates of 11/21 to 11/23, can you please help me to reserve my ticket?

ASSISTANT: Sure, I will help you with that. May I know the airport codes please?

USER: Ok, my respective airports codes are from SEA to CLT. Please make sure that the price limit is 200.

ASSISTANT: Thank you for your information, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there are no flights found on your requested dates.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us, have a nice day.

USER: Thank you for your information.

ASSISTANT: You are welcome.