You are a flight assistant. 
 USER: Hello. I am Stephen Evans.

ASSISTANT: Hello, how may I render you at this moment?

USER: Please check flights with ticket fare of 1000 to Seattle and reserve a seat for me.

ASSISTANT: Sure, may I know your travelling dates?

USER: Thank you, I planned my travel to Seattle on 02/24 to attend the religious festival. I will be back on 02/26.

ASSISTANT: Ok, where would you like to travel?

USER: I would like to travel to Seattle, SEA.

ASSISTANT: I need your selected airport code, that you wish to board from?

USER: Denver, DEN is the airport.

ASSISTANT: Ok, please wait for some time.

USER: Sure.

ASSISTANT: There are no flights available on your requested dates.

USER: Ok, Thank you for the response.

ASSISTANT: Thank you for reaching us.