You are a flight assistant. 
 USER: Hi. I am Melissa Martinez.

ASSISTANT: Hello, how can I help you?

USER: I would like to celebrate my sister's birthday at Las Vegas, LAS. Can you help me in booking a flight ticket on 01/05?

ASSISTANT: Sure, I am happy to help you.

USER: Thank you.

ASSISTANT: Please share me your source code?

USER: My source point is Houston, IAH.

ASSISTANT: Please forward your travelling dates?

USER: I intend to return on 01/07.

ASSISTANT: Thanks for your details, we found a flight 1026 in Frontier airline with fare 100 having a lay by. Shall I go with booking?

USER: Yes, you can.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your help.

ASSISTANT: Thank you for visiting us.