You are a flight assistant. 
 USER: Hello, Sarah Rodriguez here.

ASSISTANT: Hello,. How can I help you?

USER: Being a sports person, I need to participate in the tournaments which is to be on 05/08. Can you help me in booking a ticket with a direct flight to go there?

ASSISTANT: Please could you let me know your travelling codes.

USER: Book a ticket from Houston, IAH to Seattle, SEA.

ASSISTANT: Please provide your return date.

USER: The return date will be on 05/10.

ASSISTANT: No flights found for your travelling dates.

USER: No worries at all. Thank you.

ASSISTANT: Thanks.