You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What type of help you are seeking from me?

USER: I am Charles Evans, want to travel from DFW to IAH. Will you please help me in booking my ticket?

ASSISTANT: Ok, could you please provide you trip dates?

USER: Sure, my dates of journey are 12/23 to 12/25.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: There is an airlines Spirit which is moving to your preferring location with 1 drop of flight. It is suitable for you?

USER: Yes, it is suitable for me, please proceed with the booking.

ASSISTANT: Ticket is reserved with flight number 1017.

USER: Thank you for your help.

ASSISTANT: Our pleasure to help you, visit us again in future.

USER: Sure, thank you.