You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Deborah Hill.

ASSISTANT: How can I serve you at this moment?

USER: Can you please search a flight ticket from SFO to HOU?

ASSISTANT: Sure, please share your travelling dates.

USER: My travelling dates are Aug 20 and Aug 22.

ASSISTANT: Ok, share your class preference.

USER: No. I do not have any class preference.

ASSISTANT: Ok, could you please provide your return and depart time?

USER: I want my return ticket at afternoon time.

ASSISTANT: Ok, do you need any break in between the journey?

USER: I need connecting flight.

ASSISTANT: Ok, please wait for few minutes.

USER: Ok, sure.

ASSISTANT: There are no flights found on your requested dates.

USER: Ok, thank you for checking.

ASSISTANT: Thank you for reaching us.