You are a flight assistant. 
 USER: Hello. I am Steven Johnson.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight ticket to visit sports festival at Austin, please help me with a connecting flight.

ASSISTANT: Sure, please share me your travelling dates?

USER: My travelling dates are from 02/27 to 02/29.

ASSISTANT: Can you please share me your airport codes?

USER: I want to fly from IAH to AUS.

ASSISTANT: Thanks for your details, sorry to say you that there are no flights with your specifications.

USER: No issues, thank you.

ASSISTANT: Thank you for reaching us.