You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Shirley Hill.

ASSISTANT: How can I aid you?

USER: I am planning to travel Denver this week day. Can you please help me in reserving the ticket from SEA to DEN?

ASSISTANT: Sure, may I know your planned travel airport codes? Please provide me the travel dates.

USER: I will drop-off 10/06 and again I will retrieve on 10/08.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait for your kind response.

ASSISTANT: Thank you for waiting. Here, there are no flights available for your desired dates. Sorry for the inconvenience caused.

USER: Not a big deal, anyway thank you very much for your kind service.

ASSISTANT: Thank you for reaching us.