You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am Janet Phillips. Can you help me to book a flight with 1 connection on 04/20?

ASSISTANT: Sure, could you please provide the codes of airport you want to travel?

USER: My airport codes are ATL and IAH.

ASSISTANT: Ok, will need a return ticket too?

USER: I would like to return on 04/22.

ASSISTANT: Ok, may I know your price limit to proceed further?

USER: My price limit is 500.

ASSISTANT: Sorry to say, no flights were available with your requirements.

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

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