You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How should I help you today?

USER: My name is Brandon Nelson and I want to book a ticket.

ASSISTANT: Sure Nelson. Will you please provide me your travel locations?

USER: My origin airport code is Seattle, WA-SEA and destination airport code is Houston, TX-IAH.

ASSISTANT: Let me know your travel dates please.

USER: My departure date is 09/04 and return date is 09/06.

ASSISTANT: please wait a minute, I will check the flight for you. Thank you for waiting. Sorry for the inconvenience, there is no flight found as per your details.

USER: Thanks for your help.

ASSISTANT: Thank you for reaching us.