You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: I am Charles Edwards. I want to go for holiday vacation to San Francisco, SFO. Can you help me in booking with a connecting flight?

ASSISTANT: Sure, may I know your journey dates?

USER: My journey dates are from 02/15 to 02/17.

ASSISTANT: Can you please provide your boarding point?

USER: I am boarding at Chicago, ORD.

ASSISTANT: OK, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no connecting flight available on your dates.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for approaching us.