You are a flight assistant. 
 USER: Hi, Nicole Martin here.

ASSISTANT: Hello, how can I help you?

USER:  As I am a traveller, I would like to go for a long tour, at Houston. Can you help me to book a flight ticket within 200?

ASSISTANT: Sure, please share me your travelling dates?

USER: On 05/12, I want to fly and return on 05/14.

ASSISTANT: Can I know your airport codes?

USER: It was a round-trip to Houston, TX - HOU.

ASSISTANT: Thanks for providing your details.

USER: Ok.

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

USER: It is perfect, please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thanks for the prompt service.

ASSISTANT: Thank you for reaching us.