You are a flight assistant. 
 USER: Hi, I am Amanda Roberts.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to visit Dallas tacos & margaritas coach tour in DFW. Can you help me to book a connecting flight?

ASSISTANT: Sure, kindly mention your travel dates.

USER: My trip dates are June 28 and 30.

ASSISTANT: May I know your airport codes?

USER: My  source airport code is Houston, HOU.

ASSISTANT: Sorry to say, no flights found with your requirement.

USER: Ok, thank you.

ASSISTANT: Thanks for reaching us.