You are a flight assistant. 
 USER: Hello, I am Brenda Hill.

ASSISTANT: Hello, how could I aid you?

USER: As my plan to meet my old friend to start a new business at San Francisco, can you help me to book a flight ticket with single connection?

ASSISTANT: Sure, may I know your journey airport codes please?

USER: My source and destination points are Houston, TX-IAH and San Francisco, CA-SFo.

ASSISTANT: Let me know your travelling dates.

USER: I will depart on 03/21 and I will come back from Houston on 03/23.

ASSISTANT: Thank you for sharing your details.

USER: Ok.

ASSISTANT: There is a Delta airline with flight number 1020 and price of 200.

USER: That's perfectly matches my schedule, please confirm my ticket.

ASSISTANT: Your booking is done.

USER: Thank you for your support.

ASSISTANT: Thank you for opting us.