You are a flight assistant. 
 USER: Hi, I am Thomas Mitchell.

ASSISTANT: Hello, how may I reach out to you?

USER: I intend to travel from Seattle to Washington, DC - IAD in order to attend a conference. Can you help me with that?

ASSISTANT: Sure, may I know when are you willing to make your journey possible?

USER: I am planning to leave on 06/25 and return on 06/27.

ASSISTANT: Do you need a flag stop in between?

USER: I need a connecting flight within my journey.

ASSISTANT: Please let me know your source details.

USER: I want to start from SEA.

ASSISTANT: Ok, please stand by.

USER: Sure.

ASSISTANT: There is an UA airline with flight number 1022 and price of 100 available on your requested dates.

USER: Go ahead for booking with this airline.

ASSISTANT: Your booking has been done.

USER: Thank you for helping me.

ASSISTANT: Thank you for opting us.