You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Dorothy Thomas, can you help me finding flights on these dates 01/13 and 01/15?

ASSISTANT: Definitely, may I know your airport codes please?

USER: My airport codes are LAS to SEA.

ASSISTANT: Please wait for a while.

USER: Ok, I will wait for your reply.

ASSISTANT: There are no flights available on those dates, Thomas.

USER: Oh! It's ok, thank you for your services.

ASSISTANT: Thank you for choosing us.