You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I am Dennis Johnson, can you help me to book a flight with 200 price limit?

ASSISTANT: Sure, may I know when would you like to travel?

USER: I am planning to fly on 08/22 and 08/24.

ASSISTANT: Can you please help me with your airport codes?

USER: My airport codes are CLT and LAX.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your patience. Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: That is fine. Thank you for your help.

ASSISTANT: Thank you for opting us. Have a good day.