You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Please help me to book a flight ticket from OAK to IAH.

ASSISTANT: Can you share your trip dates?

USER: My journey dates are from Apr, 19 to Apr, 21.

ASSISTANT: Do you need any connections?

USER: I need a single connecting flight.

ASSISTANT: Are there any other preferences?

USER: No.

ASSISTANT: May I know your name?

USER: Michael Harris.

ASSISTANT: Connecting flight number 1009 with price 200 in economy class is available. Is it ok?

USER: Please proceed.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.