You are a flight assistant. 
 USER: Hello, I am Joseph Martin.

ASSISTANT: Hello, how can I help you?

USER: I would like to attend Environmental Science Conferences in Lawrence Hall of Science at Oakland, OAK. Can you please book a ticket from PA-PHL?

ASSISTANT: Sure, please share me your travelling dates?

USER: My travel dates are from 07/26 to 07/28.

ASSISTANT: OK, please wait a minute.

USER: Ok.

ASSISTANT: Thanks for waiting. We found 1003 Hawaiian airline with single connection and price of 100. Shall I proceed with booking?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.