You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: My name is Ryan Adams. I have a business meeting in Seattle, can you help me for booking?

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

USER: My travelling dates are from 09/25 till 09/27.

ASSISTANT: Kindly share your airport codes?

USER: My travelling airport codes are from EWR to SEA.

ASSISTANT: Please wait a moment.

USER: Sure, I will wait.

ASSISTANT: Sorry, no flights are available on your route.

USER: That's ok, thank you for checking.

ASSISTANT: Welcome.