You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, How can I serve you?

USER: Please book a ticket from Charlotte, NC-CLT to Houston, TX-HOU. I'm Lisa Adams.

ASSISTANT: Sure, Please help me with your travel dates.

USER: My departure date is 11/20 and 11/22 is my return date.

ASSISTANT: We have found a direct flight from Frontier airline. Shall I proceed?

USER: Please do not book direct flight.

ASSISTANT: Ok.

USER: Thanks.

ASSISTANT: Thank you for reaching us.