You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Nicole Rodriguez. I want to book a ticket,will you please help me in the booking?

ASSISTANT: Please provide your travelling location names.

USER: I want to travel from DFW to PHL.

ASSISTANT: Please provide your travelling dates.

USER: OK,my travelling dates would be 04/17 and 04/19.

ASSISTANT: Do you have any additional requirements?

USER: Yes,the flight should be with 1 connection.

ASSISTANT: OK,please wait a moment.

USER: Sure.

ASSISTANT: Sorry  Nicole Rodriguez unfortunately there is no flight with your requirements.

USER: Oh! it's OK. Thank you for your service.

ASSISTANT: Your welcome Nicole Rodriguez.