You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Christopher Turner.

ASSISTANT: How may I assist you?

USER: My friend has come from world tour after a long time. I would like to meet him at IAH terminal. Can you help me in booking a ticket from HOU?

ASSISTANT: May I know your travel dates please?

USER: The journey dates are 05/28 and 05/30.

ASSISTANT: I found a flight for you in Delta airlines with price 100. Can I proceed?

USER: Sure, please book the ticket.

ASSISTANT: Ok, your ticket has been booked with flight number 1011.

USER: Thank you for your favour.

ASSISTANT: Thank you for approaching us. Have a nice day.