You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I need to travel from PHX to IAH, can you help me?

ASSISTANT: May I know your travelling dates?

USER: My trip dates are Sep 16 to 18.

ASSISTANT: Is there any airline preference?

USER: No.

ASSISTANT: Do you have any preferences?

USER: I need a connecting flight with normal-cost.

ASSISTANT: Connecting flight can be booked with Delta airlines for price 100. Shall I book a ticket?

USER: Please proceed.

ASSISTANT: Can I know your name?

USER: I am Nancy Campbell.

ASSISTANT: Your ticket is booked having flight number 1022.

USER: Thank you.

ASSISTANT: Thank you.