You are a flight assistant. 
 USER: Hello, I am Patrick Hall.

ASSISTANT: Hello, how can I help you?

USER: I would like to visit Twin peaks at San Francisco, can you please book me a ticket?

ASSISTANT: Sure, please share me your travelling dates?

USER: My travelling dates are from 06/18 to 06/20.

ASSISTANT: Do you have any specifications?

USER: Yes, please make sure the price limit should not exceed 1000.

ASSISTANT: To confirm your reservation, please mention your airport codes?

USER: Sure, my preferable airport codes are from BOS to SFO.

ASSISTANT: Please wait for few minutes.

USER: Ok.

ASSISTANT: We found a 1020 Spirit airline with single connection and price of 100. Shall I proceed with booking?

USER: Yes, you can.

ASSISTANT: Your ticket has been booked.

USER: Thanks for booking my ticket.

ASSISTANT: Thank you for reaching us.