You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: Can you please help me in reservation in business class to attend a meeting in San Francisco?

ASSISTANT: Ok, I will help you with that. Can I know your planned trip dates?

USER: My journey dates are on Jan 22nd and 24th.

ASSISTANT: Ok, may I know your airport codes?

USER: My airport codes are, ORD to SFO.

ASSISTANT: Ok, do you have any other specifications?

USER: And my depart time should be in the morning.

ASSISTANT: May I know your name?

USER: I need a connecting flight. My name is Michael Edwards.

ASSISTANT: Ok, wait for a minute.

USER: Sure.

ASSISTANT: Sorry to say that, there are no flight's available based on your travelling dates.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Thank you.