You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your name please?

USER: My name is Gregory Thomas.

ASSISTANT: How can I help you?

USER: I have to attend my grandfather's funeral, could you book a ticket for me?

ASSISTANT: Sure, please tell me your journey locations and the travelling dates?

USER: My airport codes are SEA and IAD.

ASSISTANT: Travelling dates please?

USER: My journey dates are 07/16 and 07/18.

ASSISTANT: There is a flight available with 1 connection and the price is 100.

USER: Please book my ticket.

ASSISTANT: Sure.

USER: Thank you for your assistance.

ASSISTANT: Your ticket is booked successfully with JetBlue airlines and the flight is 1020. Thank you.