You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you today?

USER: Can you please hold me a flight ticket from DEN to EWR?

ASSISTANT: Sure, please share me your planned journey dates?

USER: My travel dates are 01/18 - 01/20.

ASSISTANT: Please mention your connection limit?

USER: I need a single connection.

ASSISTANT: Is there any other requirement?

USER: No.

ASSISTANT: May I know your good name?

USER: Jessica Martinez here.

ASSISTANT: Thank you for the details, sorry there is no flight available on your given journey dates.

USER: No issues, thank you.

ASSISTANT: Thank you for visiting us, we hope see you again.