You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Donald Harris.

ASSISTANT: How may I guide you?

USER: I am planning to visit Zoo at Dallas. Can you help me in booking a ticket from IAH to DFW?

ASSISTANT: Sure, may I know your planned dates please?

USER: I prefer to travel on dates 04/27 and 04/29.

ASSISTANT: Please wait a minute.

USER: Ok, take your time.

ASSISTANT: I found a flight in JetBlue airlines with price 100. Shall I book your ticket?

USER: Please book the ticket.

ASSISTANT: Ok, your booking is confirmed with flight number 1006.

USER: Thank you for your quick service.

ASSISTANT: Thank you for approaching us.