You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brandon Thomas here.

ASSISTANT: How may I render you at this moment?

USER: I am planning to book my ticket from DCA to OAK. Can you please help me with booking?

ASSISTANT: Sure, do you need any lay by in between the journey?

USER: I need a lay by in between my journey.

ASSISTANT: Ok, please share your preferred travelling dates.

USER: My journey dates are from May 24 to May 26.

ASSISTANT: Ok, do you need any class preference?

USER: I am comfortable with any class. My depart time should be evening, please recheck with that.

ASSISTANT: Ok, please wait for few minutes. There are no flights found on your requested dates.

USER: Ok, not an issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.