You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: My name is Christine Thomas. Please help me to book a flight ticket from SFO to IAH.

ASSISTANT: Sure, may I know your travel dates?

USER: My journey dates are from June, 10 to June, 12.

ASSISTANT: At what time do you like to travel?

USER: I need to return in the afternoon.

ASSISTANT: Do you have any specification?

USER: I need a single connecting flight.

ASSISTANT: We found a economy flight on your details Frontier Airlines, flight number: 1007. Shall I book this ticket?

USER: Please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for booking.

ASSISTANT: Thank you.