You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Richard Adams here. I would like to book a ticket from PHX to DFW.

ASSISTANT: Sure, please share your travelling dates.

USER: My travel dates are Dec 11 and Dec 13.

ASSISTANT: Do you need any connection in between the journey?

USER: I would like to travel by single connection flight.

ASSISTANT: Please share your other preferences.

USER: My return time should be in the morning.

ASSISTANT: Wait a minute please.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry no flights found with your details.

USER: No problem, thank you for the help.

ASSISTANT: Thank you for opting us, have a good day.