You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Susan Campbell here, I would like to visit San Francisco, can you please help me to reserve my ticket from ORD on 06/24?

ASSISTANT: Sure, can I know the return date and destination code please?

USER: Sure, my destination airport code is SFO and my return date is on 06/26.

ASSISTANT: Ok, wait a moment please.

USER: Sure, take your time.

ASSISTANT: Sorry, there are no flights available on your dates.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for approaching us.