You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I help you?

USER: I am Rachel Lewis, I want to book a ticket from IL-ORD to PA-PHL.

ASSISTANT: OK, what dates would you like to travel?

USER: My depart date is June 25 and return date is June 27 with price limit 200 and connection limit 1.

ASSISTANT: Thank you for the information, please wait for a moment.

USER: Sure,I will be waiting.

ASSISTANT: Thanks for the waiting, sorry to inform you there is no any flight are available on your details.

USER: OK,thanks for informing.

ASSISTANT: Thank you, have a nice day.