You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am planning to go for a round trip to Seattle, SEA to enjoy the beach holidays. Could you please reserve a ticket with direct flight?

ASSISTANT: Sure, may I know your travelling dates?

USER: My journey dates are from 12/24 to 12/26.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: I am sorry to inform that there is no flight found with your requirements.

USER: Ok, no problem.

ASSISTANT: May I know your good name?

USER: I am William Gonzalez. Thank you.

ASSISTANT: Thank you for reaching us.