You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Edward Nelson.

ASSISTANT: How may I abet you today?

USER: I want to book a flight ticket to attend a food festival from IL-ORD to WA-SEA. Can you help me?

ASSISTANT: Sure, please share your planned travelling dates?

USER: 04/17 and 04/19 are my travelling dates.

ASSISTANT: Thank you for details, Unfortunately there are no flight available with specified travelling dates.

USER: No issue. Thank you for your response.

ASSISTANT: Thank you for contacting us, hope we serve you next time.