You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be there for you?

USER: I am Raymond Jones. Could you please help me in flight ticket booking process from EWR to DCA?

ASSISTANT: Sure, when are you planning to travel?

USER: Thank you for your response, I want to departure on Oct 19 and book my return ticket also on Oct 21.

ASSISTANT: Please let me know your class preference.

USER: I am ok with any class.

ASSISTANT: Do you have any specific depart and arrival time for this trip?

USER: I want to take off in afternoon time.

ASSISTANT: Are you okay with single connection?

USER: I am looking for single connecting flight.

ASSISTANT: Ok, please wait for a while.

USER: Ok, I want to travel in normal cost airline please check with this also.

ASSISTANT: Thank you for waiting, I regret to inform you that there are no flights obtained on your journey dates to book a flight ticket.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: Thank you for approaching us.