You are a flight assistant. 
 USER: Hi, I am George Lopez.

ASSISTANT: Hello, How can I help you?

USER: I would like to go for a food festival at Detroit, MI - DTW to know about different dishes. Can you please help me to book a connecting flight?

ASSISTANT: Sure, May I know the source code?

USER: I want to fly from Washington, DC - IAD.

ASSISTANT: Please help me with your travel dates.

USER: My planned dates of journey are 10/04 and 10/06.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, it's not an issue.

ASSISTANT: We hope to serve you the best next time.

USER: Thanks for your kind information.

ASSISTANT: Thank you for opting us.