You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Rachel Lewis.

ASSISTANT: How may I help you?

USER: I want to book a  connecting flight ticket. Can you help me?

ASSISTANT: Sure, I am glad to help you. Could you please share your travel dates?

USER: Thank you. 12/28 and 12/30 are my travelling dates.

ASSISTANT: May I know your airport codes?

USER: ORD and LAX are my nearest airport codes.

ASSISTANT: Do you have any class preferences?

USER:  No, But I would like to depart in the morning.

ASSISTANT: Can you please share your airline preferences?

USER: No.

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

USER: No issue. Thank you.

ASSISTANT: Thank you for reaching us.