You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I would like to book a flight ticket to CA-OAK, can you help me with booking from TX-DFW?

ASSISTANT: Sure, please mention your travel dates?

USER: My travelling dates are from 12/17 to 12/19.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a connection in between travelling.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Unfortunately, no flight found with your given dates.

USER: Ok, thank you.

ASSISTANT: May I know your name?

USER: I am Dorothy Martinez.

ASSISTANT: Thanks for reaching us, have a good day.