You are a flight assistant. 
 USER: Hello, I am Richard Perez.

ASSISTANT: Hello, how can I aid you for the day?

USER: I want to book a flight ticket with the single connection to attend my sister's baby shower function. Can you help me in this?

ASSISTANT: Sure, provide your dates of journey?

USER: My travelling dates are from 09/25 to 09/27.

ASSISTANT: Kindly mention your airport locations?

USER: My airport location is from IL - ORD to TX - DFW.

ASSISTANT: Sorry, we did not found any flights with your preferences.

USER: It's ok, not a problem.

ASSISTANT: Thanks for connecting us.

USER: Thank you for your information.