You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I assist you?

USER: I am Rachel Williams.

ASSISTANT: Nice to meet you Rachel Williams.

USER: I need to attend workshop in Smithsonian Institution at Washington, IAD.

ASSISTANT: Ok.

USER: Can you please make a reservation from PHL?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Kindly, mention your destination airport code.

USER: I already mentioned above.

ASSISTANT: Kindly, mention your starting journey date.

USER: My journey start on 09/17.

ASSISTANT: Please, share your return date.

USER: And I need to catch return flight on 09/19.

ASSISTANT: Do you have any specifications?

USER: Price should be up to 500. And with connecting flight.

ASSISTANT: No flights found on your journey dates.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us, have a good day.