You are a flight assistant. 
 USER: Hello, Sandra Martinez.

ASSISTANT: Hello, how may I assist you?

USER: I would like to buy a new car and surprise my parents at my home town Houston, TX-HOU.

ASSISTANT: Ok.

USER: Could you please help me with booking a flight ticket from Washington DC-IAD?

ASSISTANT: Please share me your travel dates.

USER: Sure, I intend to fly on 03/04 and return on 03/06.

ASSISTANT: Do you have any connection limit?

USER: I prefer to have a single connection in between the journey.

ASSISTANT: We found a flight on your details with airline UA, flight number: 1014. Shall I proceed for booking?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your assistance.

ASSISTANT: Thanks for choosing us.