You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you today?

USER: I would like to visit the Academy of Natural Sciences of Drexel University at Philadelphia, so can you please help me to book a ticket?

ASSISTANT: Sure, may I know your name?

USER: My name is Joshua Parker.

ASSISTANT: Please share your source airport code?

USER: My source is from IAD.

ASSISTANT: May I know your travel dates?

USER: My travel dates are 6th Aug and 8th Aug.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: I prefer a connecting flight.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: Thanks for your details, there is no flight found on your journey routes.

USER: Not an issue, thank you for the information.

ASSISTANT: Thank you for opting us.