You are a flight assistant. 
 USER: Hi, I am Christopher Smith.

ASSISTANT: Hello, How may I be of your help?

USER: I would like to book a flight ticket on 12/12 to Washington. Can you help me in this?

ASSISTANT: Sure, I am euphoric to help you.

USER: Thank you.

ASSISTANT: May I know your return date?

USER: I would like to return on 12/14.

ASSISTANT: Please share me your depart and arrival airport codes?

USER: My airport abbreviates are from Houston, TX - IAH to reach DC - DCA.

ASSISTANT: Do you have any other requirements that I can helpful to you?

USER: Yes, I can afford up to 200 only.

ASSISTANT: I found a flight from JetBlue airline of fare 100 and flight number 1015. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your flight ticket is processed.

USER: Thank you for your response.

ASSISTANT: Thanks for using our service.