You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Shirley Walker. I want to book a flight ticket from CA - OAK to DC - IAD, can you help me in flight booking?

ASSISTANT: Ok, may I know your travelling dates?

USER: I want to fly on 07/27, return on 07/29.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT:  Here is a connecting flight with fare 100 and 1015 as flight number. Shall I proceed with booking?

USER: You can reserve it.

ASSISTANT: Your ticket is confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.