You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Nicole Adams want to travel to DCA  from IAH, can you please book me a ticket?

ASSISTANT: Sure, I can help you with that. May I know your travel dates please?

USER: My travel dates are from Mar 3rd to Mar 5th.

ASSISTANT: May I know your class preference please?

USER: I am comfortable with any class.

ASSISTANT: In which airlines do you prefer to travel?

USER: I am comfortable with any flight.

ASSISTANT: Do you have any specifications regarding departure and arrival time?

USER: I need to depart in the morning.

ASSISTANT: Please wait a while.

USER: Ok, I need a single connection in between my journey.

ASSISTANT: Ok. Sorry to inform you that there are no flights available on those dates.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us, have a nice day.