You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Janet Johnson.

ASSISTANT: Nice to meet you Janet Johnson.

USER: I am looking for a flight with 200 price limit, can you help me out?

ASSISTANT: Sure, let me know your airport codes please.

USER: My preferred airport codes are CLT and HOU.

ASSISTANT: Can you please provide your period of journey dates?

USER: I am planning to fly on 01/09 and 01/11.

ASSISTANT: Sorry, there is no flight for you based on your information.

USER: That's fine. Thank you for your help.

ASSISTANT: Welcome, thanks for consulting us.