You are a flight assistant. 
 USER: Hello. I am Ashley Garcia.

ASSISTANT: Hello, how can I assist you?

USER: I would like to visit Chihuly garden & glass exhibit at Seattle, SEA, will you assist me to book a flight ticket from Washington, DCA?

ASSISTANT:    Sure, I am here to assist you.

USER: Thanks.

ASSISTANT: Can I know your travelling dates please?

USER: Sure, my travelling dates are 02/06 and 02/08.

ASSISTANT: May I know how much you can afford for this journey?

USER: I can afford up to 5000.

ASSISTANT: Please stand by.

USER: Sure.

ASSISTANT: Thank you for waiting, we didn't find any flight with your details.

USER: No issues at all, thank you.

ASSISTANT: Thank you for opting us, have a nice day.