You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Myself Betty Martinez. Please book a flight ticket from IAH to SEA locations.

ASSISTANT: Sure, can you provide your preferred dates to travel?

USER: My travelling dates are from 08/15 and 08/17.

ASSISTANT: Sorry, unfortunately there is no flight available for your request.

USER: It's ok.

ASSISTANT: Thank you for reaching us.

USER: Thank you for the information.