You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Amy Lopez here.

ASSISTANT: Amy, how may I assist you?

USER: I would like to visit Houston to meet my grand parents, please help me in booking a ticket from SEA to IAH.

ASSISTANT: Sure, I will help you. Can you please provide me your travel dates?

USER: My planned travel dates are 11/01 ans 11/03.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: Sorry Amy, there is no flight available on your preferred travel dates.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: You are welcome and thank you for choosing us.