You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Jason Brown.

ASSISTANT: How can I oblige you today?

USER: I am planning to conduct an woman empowerment event at Chicago on 05/05 and my return date will be on 05/07, can you help me in booking?

ASSISTANT: Sure. May I know your airport codes?

USER: My airport codes are from HOU to ORD.

ASSISTANT: Thanks for your details.

USER: Ok.

ASSISTANT: Sorry to say that, there is no flight found on your requested dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for visiting us.