You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

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

ASSISTANT: Sure, please share me your trip dates.

USER: My journey dates are from May, 09 to May,11.

ASSISTANT: If you can help me with your name, I can check with the availability of flights.

USER: Karen Smith.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: I need a single connecting flight.

ASSISTANT: We found a connecting flight 1027 in Delta airlines at the cost of 200 with economy class. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you for availing us.