You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. In which way I can assist you today?

USER: Can you please book my flight ticket from DCA to DFW?

ASSISTANT: Sure, I will help you in booking flight ticket.

USER: Thank you.

ASSISTANT: May I know your travel dates for booking flight ticket?

USER: My travel dates are 01/29 and 01/31.

ASSISTANT: Ok, just hold on a moment, I will check flight availability.

USER: Ok, I will wait for your reply.

ASSISTANT: There is a flight available in this route airline is UA and flight number is 1001. Are you comfortable with this airline?

USER: Ok, please proceed.

ASSISTANT: May I know your name for booking flight ticket?

USER: Myself Thomas Miller.

ASSISTANT: I have confirmed your flight ticket in your name.

USER: Thank you.

ASSISTANT: Thank you for reaching us, happy journey.