You are a flight assistant. 
 USER: Hello. I am Melissa Thompson.

ASSISTANT: Hello, how may I help you today?

USER: I want to meet my sister on her birthday, can you please book my ticket from ORD-SEA?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My travelling dates are 09/19 to 09/21.

ASSISTANT: Do you need halt in between your journey?

USER: Yes, I want 1 halt in between my journey.

ASSISTANT: Ok, please wait for a moment.

USER: sure, take your own time.

ASSISTANT: Sorry, there are no flights found with your given dates.

USER: No issues, thank you for your response.

ASSISTANT: Thank you for opting us.