You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Barbara Carter, want to travel from EWR to OAK. Please help me in booking my ticket.

ASSISTANT: Sure, on which dates you are planning to travel?

USER: I am planning to travel on 04/21 and want to return on 04/23.

ASSISTANT: There is a flight which can travel to your region having a single lay out in between your journey having a ticket fare of 100 which is provided by UA airlines. Would you like to book this flight for your journey?

USER: Yes, please book this flight for me.

ASSISTANT: Your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Most welcome.