You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Catherine Taylor.

ASSISTANT: Taylor, how can I support you now?

USER: I want to visit the city Phoenix as I am fascinated by the history of the city. Can you help me to book a ticket?

ASSISTANT: Could you please provide your trip dates.

USER: I would like to fly on 04/23 and 04/25.

ASSISTANT: May I know your airport codes?

USER: I want to travel from IAH to PHX.

ASSISTANT: Please wait for a while.

USER: Sure, take your own time.

ASSISTANT: I found a direct flight for you with price 100, Shall I book?

USER: Yes, please book this ticket for me.

ASSISTANT: Your ticket is booked in 1028 flight.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.