You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am William White. Could you please help me with booking a flight ticket from OAK to IAD?

ASSISTANT: Sure, help me with your trip dates. Sure, help me with your travelling dates.

USER: My trip dates are 09/14 to 09/16.

ASSISTANT: There is a connecting flight with number 1003 in airline Spirit.

USER: You can book it.

ASSISTANT: Your ticket is reserved.

USER: Thank you for helping me out.

ASSISTANT: Thank you for reaching us.