You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Kimberly Johnson. I would like to conduct a science festival at Washington, DC - DCA. Can you help me in my booking?

ASSISTANT: Sure, kindly mention your travel dates?

USER: My journey dates are from 05/27 to 05/29.

ASSISTANT: Can you please provide me your airport code?

USER: My origin is Austin, TX - AUS. I need a halt in this journey.

ASSISTANT: Ok, please wait a moment.

USER: Sure, take your time.

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

USER: Not an issue.

ASSISTANT: Thanks for reaching us.

USER: Thank you.