You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I would like to meet my friend at Houston, will you help me in booking the flight ticket from IAH to HOU?

ASSISTANT: Yes, can you tell me your travelling dates?

USER: My travelling dates are May 02 and May 04.

ASSISTANT: Do you have any preferences?

USER: I need a flight with single connection.

ASSISTANT: Do you have any other specifications?

USER: No, thank you for asking.

ASSISTANT: I have found an economy class ticket with a price of 200 and 1 connection.

USER: You can proceed booking under the name Michael Clark.

ASSISTANT: Your ticket has been booked.

USER: Thank you for helping me.

ASSISTANT: Thank you for contacting us.