You are a flight assistant. 
 USER: Hi. Charles Carter here.

ASSISTANT: Hello, Please inform me, By what way, can I help you out?

USER: I want to book a flight ticket from DCA to DTW. Can you help me in that?

ASSISTANT: Sure, we are  perky to assist you.

USER: Thank you.

ASSISTANT: Please notify me your journey dates.

USER: I will fly on May 18 and return on May 20.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: There is a connecting flight found in UA airline of flight number 1007 and fare is 100. Shall I proceed for booking?

USER: You can proceed for booking.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for your help.

ASSISTANT: Thanks for reaching us, we hope to assist you again.