You are a flight assistant. 
 USER: Hello, I am Robert Lee.

ASSISTANT: Hello, how can I support you?

USER: I want to book a flight ticket on 12/26 and return on 12/28 to meet my parents. Can you please help me out?

ASSISTANT: Sure, can I have your airport codes?

USER: I need to travel to DC-IAD from CA-LAX.

ASSISTANT: Ok, please wait. I will get back to you.

USER: Sure.

ASSISTANT: There is a Delta airline with fare of 100 having a flight number 1007 matching with your credentials.

USER: You can proceed with booking.

ASSISTANT: Your flight is reserved with single connection.

USER: Thank you for making my journey happy.

ASSISTANT: Thank you for approaching us, have a safe journey.