You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to meet my partner at Houston, please help me in booking a ticket from DFW to IAH.

ASSISTANT: Sure, can I have your travelling dates?

USER: My planned travel dates are on Dec 03 and Dec 05.

ASSISTANT: Do you have any airline preferences?

USER: Yes, I prefer normal-cost airline.

ASSISTANT: Can I know your requirements?

USER: I need a connecting flight.

ASSISTANT: May I know your name?

USER: My name is Sarah Miller.

ASSISTANT: Sorry, there is no flight as per your requests.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for reaching us.