You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am Cynthia Lee. Owing for an emergency, I want to travel from ATL to LAX. Can you please help me to book my flight ticket?

ASSISTANT: Sure, could help me with your travelling dates?

USER: Sure, I want to depart on Apr 26th and I will return back on Apr 28th.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I prefer for a single connection.

ASSISTANT: We found a flight on UA airline, flight number 1027 with the fare of 200.

USER: Sounds good, please book the ticket.

ASSISTANT: Your ticket has been booked.

USER: Thank you very much.

ASSISTANT: Thank you for reaching us.