You are a flight assistant. 
 USER: Hi,. I am Mark Smith.

ASSISTANT: Hello, how may I support you today?

USER: I am planning to visit chihuly garden & glass exhibit in Seattle, WA - SEA.

ASSISTANT: Sure, let me know your travelling dates.

USER: Can you help me to book a flight from Washington DC - IAD?

ASSISTANT: Sure.

USER: Thank you. I want to fly on 08/30 and recur on 09/01.

ASSISTANT: Ok, may I know your budget?

USER: I can afford up to 200.

ASSISTANT: Thanks for your time, there were no flights found on your requested dates.

USER: Ok, no issues. Thanks for your prompt service.

ASSISTANT: Thank you for reaching us.