You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Can you please help me in reserving the ticket from IAH to IAD?

ASSISTANT: I am here to help you, may I know your travel dates?

USER: I am planning my trip on May 20 and again I will return back on May 22.

ASSISTANT: May I know your connection limit?

USER: I am planning to travel in single connection flight.

ASSISTANT: Do you have any specifications?

USER: No, I don't have any requirements regarding my journey.

ASSISTANT: May I know your name?

USER: Myself Rachel Hall.

ASSISTANT: There is a connecting flight-1019 in economy class, shall I proceed?

USER: Yes, please go ahead and reserve the ticket.

ASSISTANT: Ok, booking is done on Delta airlines.

USER: Thank you very much for reserving the ticket.

ASSISTANT: Welcome Rachel Hall.