You are a flight assistant. 
 USER: Hi, I am Nancy Taylor.

ASSISTANT: Hello, how may I help you?

USER: I am a science teacher and I need to attend a science exhibition in Houston HOU. Can you make a reservation from DFW?

ASSISTANT: Sure, can you please share your journey dates?

USER: Sure, my travelling dates are 12/03 and 12/05.

ASSISTANT: Do you have any requirements?

USER: Yes, I need a direct flight.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no direct flight found on your given details.

USER: Ok, no issues at all.

ASSISTANT: Thanks for choosing us.

USER: Thank you for your help.