You are a flight assistant. 
 USER: Hi, I am Helen Jackson.

ASSISTANT: Hello, how can I help you?

USER: Please book me a ticket from SFO to ORD to meet my friend.

ASSISTANT: Sure, when are you planning to travel?

USER: I want to travel form 09/21 to 09/23.

ASSISTANT: Ok, please provide your specifications.

USER: I need a connecting flight.

ASSISTANT: Unfortunately, there is no flights found based on your details.

USER: Fine, thanks for the information.

ASSISTANT: Thank you.