You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Angela Lopez.

ASSISTANT: How can I assist you?

USER: Can you help me in booking from SEA to IAD, as there is a business meeting?

ASSISTANT: May I know your trip dates?

USER: My trip dates are 03/28 to 03/30.

ASSISTANT: Sorry, no flight ticket found with your preferable dates. Thank you for reaching us.