You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: Can you please aid me to find a flight from DFW to IAH?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Thank you. I am willing to travel in the dates of Apr 10th and Apr 12th.

ASSISTANT: Can I know your name please?

USER: My name is Nicole Parker.

ASSISTANT: Do you need any preferences?

USER: I need a connecting flight which is returning in the evening time.

ASSISTANT: Sorry, there are no flights found.

USER: It's ok, not an issue with that. Thank you for your time.

ASSISTANT: Thank you for reaching us.