You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Eric Lopez.

ASSISTANT: How can I assist you?

USER: Can you please book me a ticket with the fare of 5000 to meet my family?

ASSISTANT: Please mention your travelling codes?

USER: It is a round trip from IAD.

ASSISTANT: Please specify travelling dates?

USER: My travel dates are from 12/31 and 01/02.

ASSISTANT: Ticket is available with flight number 1029, connections 1, airline UA for price 100. Shall I book a ticket?

USER: Ok, please book this ticket.

ASSISTANT: Ticket is booked.

USER: Thank you so much.

ASSISTANT: Thanks.