You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am David Evans.

ASSISTANT: Ok.

USER: I am planning to give party to my friends at Houston, IAH. Can you please book a ticket for me?

ASSISTANT: Sure, may I know your travelling dates?

USER: My depart is on 01/30 and return is on 02/01.

ASSISTANT: May I know your source code?

USER: Origin code is Minneapolis, MSP.

ASSISTANT: There is a Delta 1006 airline with fare of 100 which matches your travelling dates.

USER: You can proceed.

ASSISTANT: Shall I proceed with booking? Your booking has been confirmed on name of David Evans.

USER: Thank you.

ASSISTANT: Thank you for reaching us.